3/22/2022

Vitamin D in Fish

Which fish contain the highest levels of vitamin D, and how does cooking effect these levels? Find out what a recent study showed in the What to Consider When Buying section of our Vitamin D Supplements Review.

Also see our Review of Canned Fish for information about levels of vitamin D in canned fish.

3/10/2021

More Fish, Less Death for Some

A recent analysis found that regular consumption of fish was associated with an 18% lower risk of death over a 9-year period. Get the details in the What It Does section of our Canned Fish Review. Also see our Top Picks among canned and packaged tuna, salmon and sardines.

7/19/2022

Bad Clams

Two popular brands of canned clams were recently recalled. See the details our Canned Fish Review.

11/13/2024

Mercury in Canned Tuna

High levels of mercury were recently reported in canned tuna sold in several European countries. See how these levels compare with those CL found popular tuna products sold in the U.S. in the Quality Concerns section our Canned and Packaged Fish Review.

Also see our Top Picks for tuna, salmon, sardines, and herring.

8/05/2024

Best Tuna

Which canned tuna has the lowest amount of mercury? See our Top Pick in our Canned Fish Review, which includes our tests of canned tuna, salmon, sardines and herring.

2/12/2025

Canned Tuna Recalled

Several brands of canned tuna were recently recalled due to a can defect that could lead to bacterial contamination. This affects one lot of a product in our Canned & Packaged Fish Review, where we have added details about the recall.

10/23/2018

DPA -- The Other Omega-3

Studies are showing that higher blood levels of DPA (an omega-3 fatty acid obtained from fish) are associated with healthier aging and reduced cardiovascular disease. Although a cause-and-effect relationship has not been established, if you're interested in increasing DPA in your diet, we just published the amounts of DPA that we found in popular brands of canned tuna and salmon. Some had virtually no DPA, while others provided nearly 100 mg per serving. (Also see our Top Picks for Canned Tuna & Salmon.)

4/28/2023

Canned Fish Prices

We just updated the prices of products we've tested and found that prices of some (such as light tuna) are lower now. See the latest prices and our Top Picks for canned tuna, salmon, and sardines.

10/06/2025

Arsenic in Sardines

Large amounts of arsenic (a carcinogen) can occur in tuna, sardines, and mackerel. Among sardines, the lowest amount was in a filleted product, but does this explain its low arsenic? Find out in our Canned Fish Review, which includes our Top Picks for canned tuna, salmon, sardines, and mackerel.

4/16/2024

PFAS Toxins in Seafood

A recent study raised concern about high levels of PFAS in certain seafoods. Get the details in our Canned Fish Review, which includes our Top Picks among canned and packaged tuna, salmon, sardines, and herring.

11/08/2024

Warning Label on Sardines

A CL member asked why a popular brand of sardines now carries a California Prop 65 warning label. See our answer in our Canned Fish Review, which includes our Top Picks among products (including canned tuna, salmon, herring and sardines).

4/14/2020

A Food to Slow Cognitive Decline?

Adherence to a Mediterranean diet was associated with a lower risk of cognitive impairment in a major new study, but only one food within that diet -- fish -- was also linked to slower loss of cognitive function. Find out how many servings of fish had the greatest impact in the What It Does section of the Fish Oil Supplements Review. Also see if fish oil supplements help and see our Top Picks for fish oil.

Also see our Top Picks for canned tuna and salmon.

6/14/2020

Benefit of Eating Fish

Increasing intake of omega-3 fatty acids through greater fish intake was shown to provide some cognitive improvements to children according to a recent study. For details, see the What It Does section of the Fish Oil Supplements Review. Also see our Top Picks for fish oil and Top Picks for canned tuna and salmon (good sources of omega-3s).

5/22/2018

Eat Fish for Heart Health

The American Heart Association recently affirmed that eating fish may help to reduce the risk of cardiac death, coronary heart disease, and ischemic stroke. However, the same cannot be said for fish oil supplements. Get the details in the What It Does section of the Fish Oil Supplements Review. Also, stay tuned: ConsumerLab is currently testing popular brands of canned tuna and salmon to assess their purity and levels of omega-3 fatty acids.

10/20/2018

Omega-3s & Healthy Aging

Do higher blood levels of omega-3 fatty acids (as obtained from fish and/or fish oil) correlate with healthier aging? See what a new study found in our updates to the Fish Oil Supplements Review and the Canned Tuna and Salmon Review.

7/07/2021

Fish Oil for Migraine?

Can the risk of migraine headache be reduced by increasing intake of omega-3 oils from fish? Find out what a recent study showed in the Migraine Headache section of our Fish Oil Supplements Review. Also see our Top Picks among canned tuna, salmon and sardines.

10/26/2021

Trout for Omega-3s?

Is trout a good alternative to tuna or salmon as a source of omega-3 fatty acids? It depends on the type of trout. Get the details in the Getting EPA and DHA from Food section of our Fish Oil Supplements Review. Also see our Top Picks for fish oil supplements and canned fish.

8/22/2025

PFAS in Fish

Are levels of forever chemicals (PFAS) higher in freshwater fish than in canned and packaged fish? Find out in our article about avoiding PFAS.

4/04/2021

Diabetes & Sardines

Can eating sardines reduce the risk of type 2 diabetes? See what a new study found in the What It Does section of our Tuna, Salmon & Sardines Review. Also see our Top Picks for sardines, canned salmon and tuna.

Learn about the effects of fish oil supplements on blood sugar and insulin sensitivity in our Fish Oil Supplements Review.

2/07/2023

Smoked Fish & Cancer?

Can eating smoked or salted fish increase the risk of cancer? Find out in the Concerns and Cautions section of our Canned Tuna, Salmon, Sardines & Herring Review. Also see our Top Picks among products.

10/25/2024

Keeping Up Vitamin D

With less daylight now in the Northern Hemisphere, it's a good time to consider ways to keep vitamin D levels up. In addition to supplements, foods like salmon can help – but how and when you consume these can make a big difference, as shown in a recent study. For details, see the Getting Vitamin D From Foods section of our Vitamin D Supplements Review, which includes our Top Picks for vitamin D.

Also see our Top Picks among canned and packaged fish products, including salmon.

7/08/2025

Tuna With the Least Mercury

Which type of tuna, i.e., albacore, skipjack or yellowfin, was found to have the least mercury in a recently published U.S. study? Find out in the Quality Concerns section of our Canned Fish Review, which includes our own tests and our Top Picks for tuna, salmon, sardines, and mackerel.

9/03/2025

Sardines vs. Herring

Why would a product labeled as "sardines" list "herring" as the main ingredient? Find out in our Canned Fish Review, which includes our Top Pick for sardines as well as tuna, salmon, and mackerel.

6/02/2025

Astaxanthin from Salmon

Salmon is a good source of astaxanthin, an antioxidant. A new study suggests how salmon can be cooked to preserve astaxanthin, and why levels are lower in canned salmon.

Also see our Astaxanthin Supplements Review for information about its potential uses, safety concerns, and our Top Picks among astaxanthin supplements.

4/17/2025

Plasticizer in Dark Chocolate, Tuna, AG1

A CL member informed us that one of our Top Picks for dark chocolate was found to contain toxic phthalate compounds in tests by an independent group. See our take on these findings in our Dark Chocolate and Cocoa Review, which includes our Top Picks for dark chocolate and cocoa powder.

Also see the levels of plasticizers found in one of the canned tunas we've tested and the popular "greens" supplement AG1.

8/01/2023

Season Sardines

A CL member asked how Season sardines with bones compares to the Season boneless sardines that we tested. Find out.

Also see our Top Picks among sardines and for canned tuna, salmon, and herring.

2/13/2024

Removing Phytate and Lectins From Foods

We’ve answered the following questions about removing phytate and lectins from beans and other foods:

• Do canned beans need to be soaked or cooked to remove lectins before eating?
• Does soaking or cooking dried soybeans or edamame help remove phytate or lectins?
• Can the nutrient bioavailability of beans be improved by cooking with garlic, onions, or tomato?

2/25/2022

Mercury Levels in Tuna

A CL member asked Wild Planet to comment on the mercury levels ConsumerLab found in its tuna products. See the response in the Update to our Tuna, Salmon & Sardines Review. Also see our Top Picks among canned tuna, salmon, and sardines.

7/14/2013

Fish Oil Linked to Prostate Cancer?

Headlines this week about a study showing an association between the fatty acids in fish oil and the development of prostate cancer have stirred concerns about consuming fish and fish oil supplements. For details about this study and studies of other effects of fish oil and omega-3 fatty acids, as well as test results and comparisons for 74 fish and other marine oil supplements, see the updated Fish/Marine Oil (Omega-3) Supplements Review >>

1/02/2017

Supplement vs. Prescription Fish Oil?

As we have written before, by choosing an extremely concentrated fish oil supplement, you can get essentially the same type of fish oil as you would get from a prescription fish oil. But according to a recent study, fish oil supplements are more likely to be rancid (oxidized) than prescription fish oil. However, a closer look at the study by ConsumerLab staff suggests that this finding may be misleading, as explained in the "Quality Concerns" section of the Fish Oil Supplements Review >>

12/17/2019

Fish Oil Approved for Elevated Triglycerides

A highly concentrated fish oil that was originally approved only for treating very high triglycerides has been further approved by the FDA to treat lower, but still elevated, triglycerides if cardiovascular risk factors are present. For details see the Prescription Fish Oil vs. Supplements section of the Fish Oil Supplements Review. Also see our Top Picks for fish oils, including highly concentrated fish oil.

11/25/2018

Better Absorbed Fish Oil?

A specially formulated fish oil was shown to be absorbed better than regular fish oil. A closer look at the study, however, suggests that this benefit may be limited. Learn more, as well as how you can maximize fish oil absorption, in the How to Take section of the Fish & Marine Oil Supplements Review. (Also see our Top Picks for fish oil supplements.)

2/16/2016

Fish Oil and Blood Pressure

As explained in our Fish Oil Review, fish oil supplements may not provide overall cardiovascular benefits — eating fish is better. However, a recent analysis found that a certain kind of fish oil may help people with high systolic blood pressure. For details, see the Fish Oil and Omega-3 Fatty Acids Supplements Review >>

11/18/2012

Stroke and Fish Oil

An analysis of 38 studies concluded that eating fish regularly is associated with fewer strokes, but fish oil supplements do not seem to help. Interestingly, the type of fish and how it is prepared seem to make all the difference. For details, including what fish oil supplements can or cannot do, see the updated Fish Oil & Marine Oil (Omega-3) Supplements Review. More >>

3/28/2014

Fish Oil Lowers Blood Pressure

Fatty acids from fish and fish oil may reduce blood pressure, particularly in those with high blood pressure, according to a recently published review. For details, information about other uses of fish oil, and our tests of fish oil supplements, see the updated Fish Oil and Omega-3 Fatty Acid Supplements Review >> 

3/23/2014

Fish Oil Study Finds No Heart Benefit

Findings of a large study reported this week showed that a daily fish oil supplement did not reduce the risk of cardiovascular disease in elderly people. So what's the bottom line for fish oil and heart disease? See the update to the Fish Oil Supplements Review, which includes the latest information about potential uses of fish oil and our tests of popular fish oil supplements. 

5/24/2015

Fish Oil Increases Muscle/Strength

Last week we reported that vitamin D could help increase strength -- this week it's fish oil. A recent study found that taking a high dose of fish oil led to increases in muscle and strength in older individuals -- without additional exercise. As reported earlier, a lower of dose of fish oil may improve results of exercise. For the details, including specifics about the fish oil used, see the Fish Oil Supplements Review >> 

10/06/2020

Best Absorbed Form of Fish Oil?

Which form of fish oil is best absorbed? Find out what two recent studies showed in comparing triglyceride, ethyl ester, and monoacylglyceride forms of fish oil in the Forms of Fish Oil section of Fish Oil Supplements Review. Also see our Top Picks for fish oil.

1/26/2016

Fish Oil Helps in Schizophrenia

A study found that concentrated fish oil greatly reduced symptoms in more people who had recently experienced a first episode of schizophrenia than did a placebo. The greatest effect was on depressive symptoms, which is consistent with other studies which have shown fish oil to reduce depression, particularly in people who do not regularly eat fish.

This impact on depression has also been suggested as one reason why fish oil has shown some benefit in people with cognitive decline. Details about the studies and products used, including our tests and reviews of similar fish oil supplements, are found in the Fish Oil and Omega-3 Fatty Acid Supplements Review >>

1/18/2020

Fish Oils Not Equal on Cardio Benefit

High-dose, highly-concentrated fish oil is known to lower triglycerides in people with elevated levels. One prescription product was even shown to lower the risk of cardiovascular events in such people. However, a clinical trial of another fish oil was recently stopped due to its low likelihood of providing this benefit. Learn how these products differ and how fish oil supplements compare to them in the Prescription Fish Oil vs. Supplements section of the Fish Oil Review. Also see our Top Picks for fish oil and other marine omega-3 supplements.

9/17/2019

Fish Oil in Pregnancy?

Several studies have evaluated the effects of taking fish oil during pregnancy, including a recent study seeking a reduction in premature births. Find out if fish oil helps in the During Pregnancy: Effects on Children section of the Fish Oil Supplements Review. Also see our Top Picks for fish oil.

3/19/2019

Prescription Fish Oil Lowers Heart Attack Risk

A prescription fish oil was found to lower the risk of cardiovascular events such as heart attack and stroke by 30% in people at high risk. For details, see the Prescription Fish Oil vs. Supplements section of the Fish Oil Supplements Review. Also see our Top Picks for fish oil supplements.

11/15/2019

Fish Oil Plus Statins for High Triglycerides

This week an FDA panel recommended that a prescription fish oil be approved for use with statins in people with high triglycerides. Get the details and see how fish oil supplements compare in the Fish Oil Supplements Review. Also see our Top Picks among fish oil supplements.

7/28/2018

Dry Eye, Fish Oil and Contact Lenses

Taking fish oil can help people with dry eye and it was recently studied for dry eye associated with wearing contact lenses. Find out what the recent study found and learn more about fish oil for dry eye in the What It Does section of the Fish Oil & Omega-3 Supplements Review. (Also see our Top Picks among fish oil supplements.)

5/13/2015

Fish Intake and Breast Cancer Risk

Women with breast cancer who consumed the most fish had a lower risk of death compared to women who did not eat fish, a new study reports. Get the details, plus evidence for the use of fish oil supplements to reduce the risk of breast and prostate cancer, and our tests of popular products in the Fish Oil and Omega-3 Fatty Acids Supplements Review >>

7/21/2018

Fish Oil for Heart Health?

Are fish oil supplements good for the heart? See what a review of over 70 clinical trials concluded in the Heart Attack and Stroke section of the Fish Oil and Omega-3 Supplements Review.

Also, learn what fish oil can or cannot do for other health conditions, such as arthritis, in the What It Does section of the review. (See our Top Picks among fish and marine oils.)

9/25/2018

Fish Oil Drug May Help

High doses of fish oil highly-concentrated in EPA and/or DHA are known to lower elevated triglycerides. But can they reduce the risk of cardiac events, such as heart attack? Preliminary results from a new study suggest that one product can — at least in certain people. Get the details in the Prescription Fish Oil vs. Supplements section of the Fish Oil Supplements Review. (Also see our Top Picks among fish oil supplements.)

11/11/2018

Mixed Results for EPA/DHA Fish Oil

Concentrated EPA/DHA fish oil given daily to a cross-section of Americans was not found to lower the risk of cancer or cardiovascular disease except for those with low fish intake and for African-Americans. See the details in the What It Does section of the Fish Oil Supplements Review. Also see which supplements are comparable to the fish oil in the study.

6/07/2014

Fish Oil May Reduce Risk of Blood Clots

A study of more than 20,000 people found that those who ate fish several times per week had a reduced risk of venous blood clots, and that getting additional fish oil from supplements reduced the risk even further. Get the details, including our tests of fish oil and other omega-3 supplements in the Fish Oil and Omega-3 Fatty Acid Supplements Review (Including Krill, Algae, Calamari, Green-lipped Mussel Oil) >>   

10/04/2011

Fish Oil's Impact on Cognitive Decline

Cognitive decline may be a normal part of aging, but a new study suggests that high-dose fish oil particularly rich in DHA may provide some benefit. In people over age 65 with mild cognitive impairment, fish oil was associated with improved verbal skill. Perhaps as important, fish oil also reduced depressive symptoms, which can be a risk factor in the progression to dementia. Get the details, including how much DHA and EPA was used in the study, in the Fish Oil and Omega-3 Fatty Acid Supplement Review. More >>

9/21/2013

Fish Oil and Arthritis

A study of several thousand women found those who consumed at least a moderate of amount omega-3 fatty acids (EPA and DHA) from fish in their diets had just half the risk of developing rheumatoid arthritis over the course of the study than did women with lower intakes.  For details about the amount of omega-3's and fish consumption associated with preventing arthritis, other uses of omega-3's, and tests of fish/marine oil supplements, see the Fish/Marine Oil Supplements Review>>

7/07/2013

Fish Oil for Brain Function

Healthy people, ages 50 to 75, given a specific fish oil supplement for 6 months experienced significant gains in their performance on visual tasks, reading, and verbal fluency in a recent placebo-controlled study. Brain scans also showed significant gains in the structure and volume of tissue in several areas of the brain. For details about the type and dose of fish oil taken, as well as test results and comparisons for 74 fish and other marine oil supplements, see the updated Fish/Marine Oil (Omega-3) Supplements Review >>

4/22/2012

Heart Benefits of Fish Oil Supplements in Doubt

A review of the latest studies finds no conclusive evidence that fish oil supplements help people hoping to prevent another heart attack or stroke. It also remains unclear if fish oil provides cardiovascular benefits for healthy individuals. Find out what people concerned about heart disease should do, the other potential benefits of fish oil supplements, and our tests of supplements on the market in the updated Fish Oil Supplements Review. More >>

5/19/2013

Fish Oil No Help for Heart Disease?

A new study found that taking a fish oil supplement did not reduce the risk of heart attack or stroke in people with multiple risk factors for heart disease. But this doesn't tell the whole story. Get the bottom line on fish oil for heart disease and test results for over 70 fish oil supplements, in the updated Fish Oil and Omega-3 Fatty Acid Supplements Review >>

2/05/2012

Fish Oil During Pregnancy Reduces Allergy in Infants

Last year we reported important findings from a study of fish oil given to pregnant women. A further analysis of that study shows another benefit of daily fish oil for pregnant women -- their babies have nearly a 40% lower risk of egg allergies. A lower risk of eczema was also found, although this association did not hold after adjusting the data for certain factors. See the update to the Fish Oil Supplements Review, which includes details on this study, the type and amount of fish oil taken, and our latest product tests.

1/15/2012

Fish Oil for Strength

A recent study of women in their 60's suggests that taking fish oil when strength-training leads to greater improvements in strength than training alone. Women who took fish oil were not only stronger but had a greater functional capacity, such as being able to rise faster from a chair. For the type and dose of fish oil taken, and more details, see the update to the Fish Oil Supplements Review, which includes the latest product tests.

12/20/2011

Algal Oil vs. Fish Oil

Fish get their omega-3's from algae and many people are now doing the same by taking algal oil, but how does it compare to fish oil? Experts recently reviewed studies of algal oil and concluded that it boosts ("good") cholesterol but it also increases LDL cholesterol -- which is often thought of as "bad" cholesterol. But there's more to the story. Get the details in the recently updated Fish/Marine Oil Supplements Review, which includes our test results for algal, krill, and fish oil supplements.

3/07/2020

Fish Oil and Heart Disease

Many studies have assessed the potential benefits of taking fish oil supplements. Results have been conflicting, but one of the largest and longest-term studies was recently published. See what it found in the What It Does section of the Fish Oil Supplements Review. Also see our general recommendations for using fish oil for heart health and check out our Top Picks for fish oil supplements.

6/18/2019

Fish Oil for Heart Failure?

Can taking fish oil improve heart function in people with chronic heart failure? See the results of a recent study (and find out what type of fish oil was used) in the What It Does section of the Fish Oil Supplements Review. Also see our Top Picks for fish oils.

9/01/2020

Fish Oil Slows Atherosclerosis

A highly-concentrated prescription fish oil was shown to significantly reduce the progression of atherosclerosis (hardening of the arteries) in people with high triglycerides, according to a recent study. Get the details in the Prescription Fish Oil vs. Supplements section of the Fish Oil Supplements Review. Also see our Top Picks for fish oil.

2/13/2021

Which Form of Fish Oil Is Best Absorbed

The amount of omega-3 fatty acids (EPA and DHA) that you absorb when taking fish oil depends on the form of oil and/or when you take it. A new study suggests that a certain form is better absorbed than others. Get the facts in the Forms of Fish Oil section of our Fish Oil Supplements Review. Also see our Top Picks for fish oil.

11/18/2020

Heart Risk With Fish Oil

Last week we reported on an increased risk of a serious heart problem with use of prescription fish oil. This week, a study suggested a similar issue with even a lower dose of non-prescription fish oil. See the details in the Concerns and Cautions section of the Fish Oil Supplements Review. Also, see our Top Picks among fish oils.

8/31/2021

Caveat With Prescription Fish Oil Study

Some of the cardiovascular benefit reported for a prescription fish oil may have actually been due to a problem with the placebo to which it was compared, according to new research. Get the details in the Prescription Fish Oil vs Supplements section of our Fish Oil Supplements Review. Also see our Top Picks among fish oil supplements.

10/20/2023

Gout & Fish Oil

People with gout are advised to limit intake of purine-rich foods, including certain fish. Should fish oil supplements also be avoided? Find out in the Gout section of our Fish Oil Supplements Review, which includes our Top Picks for fish oil.

Also see: "Which supplements and foods help with gout and which may worsen it?"

1/31/2023

Fish Oil & Rheumatoid Arthritis

A recent study investigated how fish oil supplementation may help to reduce symptoms of rheumatoid arthritis. Get the details, and learn if fish oil can help with osteoarthritis and other inflammatory conditions, in our Fish Oil Supplements Review, which includes our Top Picks for fish oil.

Also see: Which supplements can help with arthritis?

5/29/2025

Fish Oil Benefit for Some

High-dose fish oil has shown limited cardiovascular benefit, but a recent analysis suggests it may help people in certain countries more than others. Get the details in the Prescription Fish Oil vs. Supplements section of our Fish Oil Supplements Review, which includes our Top Pick for fish oil supplements.

6/07/2017

Spoiled Fish Oil Is Less Effective

Spoiled fish oil does not lower LDL "bad" cholesterol, while the same amount of non-spoiled fish oil does, according to a new study. If you take fish oil to improve your cholesterol levels, it would seem best to use a product that is not spoiled — something ConsumerLab tests for. (It may also be best to choose an oil in the triglyceride form, rather than the ethyl ester form). For details, see the "Quality Concerns" section of the Fish Oil Supplements Review. Also see our Top Picks among fish oils.

12/13/2011

Concern with Rancid Fish Oil

As our tests have shown, some fish oils are spoiled by the time you buy them. Spoilage produces a variety of compounds. You can smell and taste some of these (if you take the oil directly by spoon, for example) but others you cannot. An expert panel recently reported on the safety of consuming rancid fish oil. See their conclusions in the Fish/Marine Oil Supplements Review, which includes our test results.

4/22/2012

Fish Oil Tested for Multiple Sclerosis

Fish oil supplements are often taken by multiple sclerosis patients with the hope that omega-3 fatty acids can improve their condition, but a new study suggests fish oil supplements may not provide benefit. For details, including the dose used, see the updated information in the Fish Oil Supplements Review. More >>

10/28/2012

Fish Oil Helps Memory

A small study of healthy young women and men found that those with the highest levels of the omega-3 fatty acid DHA in their red blood cells scored better on a memory test than those with lower levels. After six months of supplementation with a certain fish oil supplement, scores improved -- particularly among those whose DHA levels had been lowest. See the Fish Oil (Omega-3) Supplements Review for details about this study, the particular supplement used, what fish oil can and cannot do, and our quality ratings of products. More >>

5/09/2011

Did you hear that DHA (an omega-3 fatty acid in fish oil) might raise the risk of prostate cancer?

This was recently in the news. Higher levels of DHA in the blood were associated with increased risk of high-grade prostate cancer. However, the findings do not mean that you should stop taking fish oil or eating fish. We talked with the researcher of this study and learned more. Get the facts in our Fish Oil Supplements Review. More >>

4/10/2011

Fish Oil and the Eye

A study of over 30,000 women showed that the risk of developing age-related macular degeneration (AMD) was reduced by up to 42% among those consuming the most fish and highest amounts of omega-3 fatty acids DHA and EPA. Find out the specific types and amounts of fish and the amounts of DHA and EPA associated with the greatest reductions in the risk of AMD. See the Fish Oil Supplements Review for more >>

8/07/2011

Fish Oil and Anxiety

A study using a specially concentrated fish oil supplement showed a 20% reduction in anxiety symptoms compared to placebo. An update to the Fish Oil Supplements Review includes the dose and type of fish oil used. More >>

6/24/2012

Fish Oil for Strokes and Heart Attacks?

A recent study with fish oil supplements found no reduction in strokes and heart attacks among people with diabetes and poor glucose control. Does this mean fish oil doesn't help with cardiovascular disease? Not necessarily. See the updated Fish Oil (Omega-3) Supplements Review. More >>

3/10/2013

What You Need to Know About Fish Oil

Most fish oil in supplements is not natural, but is a semi-synthetic form. This affects how much you absorb and new research is revealing other differences. Time to throw out what you take, or switch brands? Probably not, but if you use fish oil, it's worth knowing about these differences. Get the details in the update to the Fish Oil and Omega-3 Fatty Acid Supplements Review (Including Krill, Algae, and Calamari Oil) >>

5/03/2014

Does Fish Oil Help During Pregnancy?

A recent study shows that, at age 4, children born to women given DHA-rich fish oil during pregnancy do not fare better cognitively than other children. Other positive effects around the time of birth, however, suggest that supplementation may be worthwhile. For details, as well as our tests of fish oil supplements, see the Fish Oil and Omega-3 Fatty Acid Supplements Review (Including Krill, Algae, Calamari, Green-lipped Mussel Oil) >>   

7/04/2015

Fish Oil and Alzheimer's Disease

The evidence is mixed on whether fish oil can help people with Alzheimer's disease. A benefit was seen in a study reported last year, but a recently reported study found no benefit with fish oil combined with antioxidants. More details are found in the "What It Does" section of the Fish Oil and Omega-3 Fatty Acid Supplements Review >>

8/29/2015

Does Fish Oil Slow Cognitive Decline?

Results of a large U.S. study suggest that taking fish oil does not slow cognitive decline in the elderly. Before you nix fish oil for this purpose, be aware of an important caveat about the people in the study. Get the details about this and other studies of omega-3 fatty acids, as well as our tests of popular products, in the Fish Oil and Omega-3 Fatty Acid Supplements Review >>

12/20/2017

Can Fish Oil Help Statins?

Adding fish oil to cholesterol-lowering statin therapy was found to provide added benefit in certain situations. See the details, including dosage of EPA and DHA, in the "What It Does" section of the Fish Oil Supplements Review > (Also see our Top Picks for fish oil supplements).

11/26/2019

Fish Oil & Colon Cancer

There is new evidence that taking fish oil may reduce the risk of colorectal cancer for certain people. For details see the Cancer section of the Fish Oil Supplements Review. Also see our Top Picks among fish oil supplements and other marine sources of omega-3s.

4/23/2019

Fish Oil During Pregnancy

Does taking fish oil during pregnancy yield children with higher IQs? Find out what studies are showing in the What It Does section of the Fish Oil Supplements Review. Also see our Top Picks for fish oil supplements and other sources of omega-3 fatty acids.

12/09/2018

Fish Oil Bleeding Risk?

Does taking fish oil increase the risk of bleeding? See the latest evidence in the Concerns and Cautions section of the Fish Oil Supplements Review. (Also see our Top Picks among fish oils).

10/18/2019

How to Use Fish Oil for Depression

Guidelines have been published for using fish oil to treat major depressive disorder. For details, see the Depression section of the Fish Oil Supplements Review. Also see our Top Picks for fish oil.

1/21/2020

Fish Oil & Fertility

Is there a relationship between taking fish oil and sperm count? See what a recent study in men found in the What It Does section of the Fish Oil Review. Also see our Top Picks for fish oil.

2/11/2020

Fish Oil for Diabetes?

There is mixed evidence as to whether fish oil helps people who have diabetes. Get the details, including those of a new study, in the What It Does section of the Fish Oil Supplements Review. Also see our Top Picks for fish oil.

10/08/2019

Fish Oil to Improve Cognition?

See the results of the most recent study of fish oil to improve memory and cognition in the Memory Enhancement section of the Fish Oil Supplements Review. Also see our Top Picks for fish oil.

2/07/2020

Avoid Quality Problems With Fish Oil

Nearly half of 17 popular fish oil supplements tested in a recently published study did not meet at least one of the quality criteria for freshness or content. Interestingly, two that passed testing were Approved by ConsumerLab, but none that failed were CL Approved. For details, see the Quality Concerns section of the Fish Oil Supplements Review. Also see our Top Picks for fish and marine oils.

5/02/2020

Does Fish Oil or Curcumin Increase Brain Blood Flow?

A study among people ages 50 to 80 evaluated the effects of fish oil and curcumin on blood flow to the brain and on other aspects of cardiovascular function. See the results in the "What It Does" section of the Fish Oil Supplements Review and the Curcumin Supplements Review. Also see our Top Picks for fish oil and curcumin.

5/23/2020

Generic Fish Oil Approved

The first generic version of icosapent ethyl (Vascepa) was recently approved by the FDA. But don't expect it on the market soon. See the details in the prescription omega-3s section of the Fish Oil Supplements Review, which includes comparisons with fish oil supplements. Also see our Top Picks for fish oils, including highly concentrated versions.

6/23/2020

Fish Oil for Improved Insulin Sensitivity?

Fish oil was given for three months to people with decreased sensitivity to insulin. Did it improve insulin sensitivity? Find out in the What It Does section of the Fish Oil Supplements Review. Also see our Top Picks among fish oil supplements.

1/14/2017

Fish Oil for Migraine

Although the evidence to-date has been mixed on whether taking fish oil reduces migraine headaches, a recent placebo-controlled study showed a significant benefit for fish oil when taken along with a prescription medication. For details, see the "What It Does" section of the Fish Oil Supplements Review >>

11/19/2019

Fish Oil Can Reduce Cognitive Decline

Another study has shown that supplementing with high-dose omega-3 fatty acids from fish oil can reduce cognitive decline in certain people. For details, see the What It Does section of the Fish Oil Supplements Review. Also see our Top Picks among fish oils.

1/12/2019

Maintaining Muscle With Fish Oil?

Can taking fish oil prevent muscle loss when a limb is immobilized, such as in a brace? Find out what a recent study showed in the "Strength and Muscle" section of the Fish Oil Supplements Review. (Also see our Top Picks for fish oil.)

1/26/2019

Fish Oil for Asthma?

Can high-dose fish oil help people with asthma? See what a study recently found in the "What It Does" section of the Fish Oil Supplements Review. Also see our Top Picks for fish oil.

5/07/2019

Statins Plus Fish Oil?

Does high-dose fish oil provide additional coronary benefit to people already taking a statin drug? Find out in the What It Does section of the Fish Oil Supplements Review. Also see our Top Picks among fish oils.

8/21/2019

Omega-3s for Lowering Triglycerides

Elevated triglycerides ("hypertriglyceridemia") is increasingly common in the US. High-dose omega-3s from fish oil can help, and the American Heart Association recently updated its advice about this. For details, and to learn how prescription omega-3 compares to supplements, see the Dosage section of the Fish Oil Supplements Review. Also see our Top Picks for fish oils, including highly concentrated fish oils.

2/03/2018

Disheartening Fish Oil News

Another report was published this week showing no cardiovascular benefit from fish oil supplementation. You can get the details in the Heart Attack and Stroke section of the Fish Oil Supplements Review. Fish oil may provide cardiovascular benefit in limited situations, as explained in the Review.

11/11/2018

High EPA Fish Oil Lowers Cardiovascular Risk for Some

Taking high-dose, high-EPA fish oil (Vascepa) was found lower the risk of cardiovascular disease by 25% among people with elevated triglycerides in a major new study. Get the details in the What It Does section of the new Fish Oil Review. (Also see how fish oil supplements compare to Vascepa.)

9/04/2018

Fish Oil & Diabetes

In a major study, fish oil was given to people with type 1 or type 2 diabetes for several years to see if it would reduce serious cardiovascular events, like heart attacks and stroke. Find out what happened in the Heart Attack and Stroke section of the Fish Oil Supplements Review. (Also see our Top Picks among fish oil supplements.)

9/14/2018

Anxiety and Fish Oil

An analysis of clinical trials with fish oil looked at whether supplementation was associated with decreased anxiety. See the results in the What It Does section of the Fish Oil Supplements Review. (Also see our Top Picks among fish oil and other omega-3 supplements.)

1/23/2018

A Reason to Take Fish Oil With Statins?

It's well known that high-dose fish oil can lower elevated triglycerides. But can it help people already on a statin drug? A recent clinical trial answered this question. Get the details, including the dose of fish oil used, in the "Heart Attack and Stroke section of the Fish Oil Omega-3 Fatty Acid Supplements Review. (Also see our Top Picks among products.)

9/24/2014

Lower-dose Fish Oil Helps with Epilepsy

A small, but well-controlled study of people with drug-resistant epilepsy found that a modest dose of fish oil significantly reduced the frequency of seizures while a higher dose did not. The researchers note a possible explanation why the lower dose was more effective than the higher dose. Find out the details, including the dose and exact type of fish oil used, in the update to the Fish Oil Supplements Review >> 

4/08/2015

Avoid Fish Oil When Getting Chemotherapy

A series of studies in mice and people suggest that fish oil from supplements, and consumed from certain fish, can interfere with chemotherapy. More details are in the Fish Oil Supplements Review >>

3/14/2017

When Does Fish Oil Help the Heart?

There are new recommendations on the use of fish oil supplements with regard to preventing heart attack, stroke, atrial fibrillation, and heart failure. More about these recommendations and other uses of fish oil are found in the "What It Does" section of the Fish Oil Supplements Review (which includes our tests of products) >>

7/16/2014

Fish Oil May Prevent Cognitive Decline

A study of older individuals found that cognitive function and brain volume (size) were better preserved among those who reported using fish oil supplements than those who did not. The effect, however, was only seen in certain groups of people. For more about the study, and our tests and comparisons of fish oil supplements, see the updated Fish Oil and Omega-3 Fatty Acid Supplements Review (Including Krill, Algae, Calamari, Green-lipped Mussel Oil) >> 

7/12/2017

Fat Fish vs. Lean Fish

If you are trying to control your blood sugar, it turns out that your choice of fish can make a difference. Learn more in the "What It Does" section of the Fish Oil Supplements Review. The review includes our Top Picks among omega-3 supplements.

7/19/2017

Fish Oil for Depression

A number of studies have reported on whether taking fish oil can help with depression. The most recent study found a benefit using an amount and type of fish oil generally in-line with what other studies suggest works best. See the details in the "What It Does" section of the Fish Oil Review. The Review includes our tests, comparisons, and Top Picks for products.

7/29/2017

Fish Oil for Endurance

High-dose fish oil may help to increase exercise endurance, according to a new study, adding to evidence of other beneficial effects of fish oil on muscle mass and strength. For details, see the "What It Does" section of the Fish Oil Supplements Review, which includes our Top Picks among products.

10/31/2017

Fish Oil for Focus in Kids?

Fish oil supplementation was shown to improve executive functioning in children, according to a study that focused on children with mood disorders. For details, see the "What It Does" section of the Fish Oil and Omega-3 Fatty Acids Supplements Review >> [Also see our Top Picks for fish oil supplements in the Review.]

7/28/2020

Fish Oil for Arthritis?

Fish oil has shown modest benefits in rheumatoid arthritis, but can it help with osteoarthritis -- inflammation due to worn joints? Find out what a recently published study showed in the What It Does section of the Fish Oil Supplements Review. Also see our Top Picks for fish oil.

7/02/2019

Adding Fish Oil to Statins?

Does adding high-dose fish oil help reduce triglycerides in people who already take statins? See the results of a new study in the What It Does section of the Fish Oil Supplements Review. Also see our Top Picks among fish oils.

5/15/2018

Fish Oil for Joints

See what happened when high-dose fish oil was given for a year to older men and women in the Arthritis and Other Inflammatory Diseases section of the Fish Oil Supplements Review. Also see our Top Picks among fish oils and other omega-3 supplements.

12/14/2021

Fish Oil for Dry Eye?

Does supplementing with fish oil, alone or in combination with other oils, improve symptoms of dry eye? See the results of the latest study in the What It Does section of our Fish and Marine Oil Supplements Review. Also see our Top Picks among fish oil supplements.

12/28/2021

Fish Oil to Prevent Depression?

Does fish oil prevent depression? Find out what a recent study found in the Depression section of our Fish Oil and Omega-3 Supplements Review. Also see our Top Picks among fish oil supplements.

For information about other supplements promoted for depression, see our answer to the question: What are the best supplements for depression and anxiety?

5/18/2021

Fish Oil Interaction With Medication

High-dose fish oil can significantly increase blood levels of certain immunosuppressants, according to new research. Get the details in the Concerns and Cautions section of our Fish Oil Supplements Review, which includes information about other drug interactions with fish oil.

12/02/2020

Fish Oil & Testosterone?

Can fish oil supplementation increase testosterone levels in men? Find out what a new study found in the What It Does section of the Fish Oil Supplements Review. Also see our recent Top Picks for fish oil.

12/16/2020

High-Dose Fish Oil for COVID?

A two-week course of high-dose, high-concentration fish oil was reported to reduce inflammation and symptoms in COVID patients in a preliminary study. See the details in the What It Does section of the Fish Oil Supplements Review. Also, see our Top Picks for fish oil supplements.

4/04/2021

Fish Oil for Memory?

Can taking high-dose fish oil improve memory and cognitive function in older people with coronary artery disease? Find out what a recent study showed in the Age-related Cognitive Decline section of our Fish Oil Supplements Review. Also see our Top Picks among fish oil supplements.

11/06/2020

Fish Oil for Liver Disease?

Does taking fish oil help people with nonalcoholic fatty liver disease (NAFLD)? Find out what a recent study suggested in the What It Does section of our Fish Oil Supplements Review. Also see our Top Picks for fish oil.

9/12/2020

Fish Oil During Pregnancy

Does taking fish oil during pregnancy lead to cognitive benefits in children? Find out what a recent study showed in the What It Does section of Fish Oil Supplements Review. Also see our Top Picks for fish oil.

9/22/2020

Fish Oil and Eye Bleeding

Can high-dose fish oil increase the risk of bleeding in the eye? Get the details of a recently reported case in the Concerns and Cautions section of our Fish Oil Supplements review. Also see our Top Picks for fish oil.

9/25/2020

Fish Oil for Menopause?

Can taking fish oil reduce symptoms of menopause? Find out what a recent study showed in the What It Does section of our Fish Oil Supplements Review, and see our Top Picks for fish oil. Also see our Menopause Supplements Review for information about other supplements for menopause.

2/07/2023

Fish Oil Absorption

Re-esterified triglyceride forms of fish oil are among the best absorbed forms. But even among these re-esterified forms, there can be differences. Find out what a recent study suggests in the Forms of Fish Oil section of our Fish Oil Supplements Review.

10/11/2022

Fish Oil for Better Sleep?

Fish Oil for Better Sleep? Does fish oil improve sleep in middle-aged men and women? See what a new study found in the What It Does section of our Fish Oil Supplements Review.

Also see our answer to the question: What are the best supplements or lifestyle modifications for insomnia, and which can make insomnia worse?

1/27/2023

Fish Oil & Hair

A diet extremely high in fish oil caused hair loss in a recent study in mice. Should this be a concern for people? Find out in the Concerns and Cautions section of our Fish Oil Supplements Review, which includes our Top Picks for fish oil.

Also see: Do hair supplements, such as Viviscal, Hair La Vie, and Nutrafol, or topical essential oils work?

2/28/2023

Fish Oil for Strength?

Does supplementing with fish oil boost gains from resistance exercise? Find out what a recent study suggests in the Muscle, Strength and Falls section of our Fish Oil Supplements Review. Also see our Top Picks for fish oil.

3/10/2023

Fish Oil for Infertility?

Can supplementing with fish oil improve the likelihood of pregnancy among women with PCOS-related infertility? Find out what a recent study showed in the Infertility section of our Fish Oil Supplements Review. Also see our Top Picks for fish oil supplements.

6/02/2023

Fish Oil for Gum Disease?

Does taking fish oil after dental "deep cleaning" reduce bleeding and pocketing around teeth in people with severe gum disease? Find out what a recent study showed in the Periodontitis section of our Fish Oil Supplements Review. Also see our Top Picks for fish oil.

6/16/2023

Fish Oil & Chocolate for Memory?

Did consuming fish oil and chocolate improve cognition in people with cognitive decline? See what a new study found in the Cognitive Impairment section of our Fish Oil Supplements Review, which includes our Top Picks among fish oil supplements.

Also see: Do any supplements, foods or lifestyle modifications help with brain function, like memory and cognition?

9/26/2023

Add Fish Oil to Statins?

For people already on a statin drug to lower cholesterol, does taking high-dose fish oil offer additional benefits? See what a new study found in the Taking With Statins section of our Fish Oil Supplements Review, which includes our Top Picks for high-concentration fish oils.

Also see: Which supplements or foods can help lower cholesterol and keep my heart healthy? Are there any to avoid?

10/31/2023

Fish Oil for Depression & Anxiety?

Fish oil may help reduce symptoms of depression and anxiety, but the dose and level of EPA vs. DHA matters, according to several studies, including a recent one. Get the details in the Depression section of our Fish Oil Supplements Review, which includes our Top Picks for fish oil.

Also see: What are the best supplements for depression and anxiety?

11/03/2023

Fish Oil & Bleeding Risk

High-dose fish oil can increase bleeding risk, but this is most likely among people on certain medications, according to recent data. For details see the Concerns and Cautions section of our Fish Oil Supplements Review. Also see our Top Picks for fish oil.

1/09/2024

High-Dose Fish Oil for Heart Attack Recovery?

During recovery from heart attack, does high-dose fish oil prevent another heart attack, heart failure, or death? Find out what a recent study showed in the Heart Disease and Stroke section of our Fish Oil Supplements Review. Also see our Top Picks for fish oil.

1/16/2024

Fish Oil Plus Statins?

Does adding high-dose fish oil to therapy with statins slow the progression of coronary plaque? See what a new study found in the Taking with Statins section of our Fish, Krill, and Algal Oil Supplements Review. Also see our Top Picks among fish oil supplements.

3/05/2024

Fish Oil for Memory?

Did taking fish oil improve cognitive function or memory among older people with depression in a recent study? Find out in the Memory Enhancement section of our Fish Oil Supplements Review, which includes our Top Picks for fish oil.

Also see: Do any supplements, foods or lifestyle modifications help with brain function, like memory and cognition?

4/09/2024

Fish Oil and Heartburn/Reflux

In some people, fish oil causes heartburn or reflux. See tips for reducing these side effects in our Fish Oil Supplements Review, which includes our Top Picks among fish, krill, and algal oil supplements.

Also see: Which supplements, foods or diet and lifestyle changes help relieve acid reflux (heartburn), and which worsen it?

4/16/2024

Pharmaceutical Grade Fish Oil

A member asked why CVS has stopped selling its Pharmaceutical Grade Fish Oil. We asked CVS, which gave no good reason, but we suspect that the product may have been considered an "unapproved" medication due to its similarity to prescription fish oil. But good options remain: See our Top Pick for highly concentrated fish oil in our Omega-3 Supplements Review.

3/15/2022

Fish Oil and Heart Failure Risk?

Can supplementing with fish oil reduce cardiovascular risk factors in people at high risk for heart failure? Find out what a recent study showed in the Heart Attack and Stroke section of our Fish and Marine Oil Supplements Review. Also see our Top Picks among fish oil supplements.

4/05/2022

Fish Oil for Heart Failure?

Can fish oil reduce the risk of being hospitalized due to heart failure? See what a major study found in the Heart Disease and Stroke section of our Fish Oil Supplements Review. Also, see our Top Picks for fish oil.

8/30/2022

Fish Oil for High Cholesterol, Depression

Separate studies looked at whether or not taking fish oil can lower high cholesterol levels or reduce depression. See the details in our Fish Oil Supplements Review.

If you take a statin, read about the pros and cons of taking fish oil with statins.

Also see our article that discusses other supplements for high cholesterol.

9/02/2022

Toxin in Fish Oil Supplements?

Should you be concerned about toxic PFAS (per- and polyfluoroalkyl substances) in fish oil supplements? Find out what a recent study suggests in the Contaminants in Fish vs. Supplements section of our Fish Oil Supplements Review.

Also see our CL Answer about PFAS.

3/24/2025

Fish and Krill Oil for Depression?

Did taking a relatively low dose of fish oil or krill oil reduce depression or anxiety in people with major depressive disorder? See what a recent study found in the Depression section of our Fish Oil Supplements Review, which includes our Top Picks among fish oil, krill oil, algal oil, and other omega-3 supplements.

Also see: What are the best supplements for depression and anxiety?

4/03/2025

Fish Oil & Preterm Labor

Fish oil – particularly the omega-3 fatty acid DHA – may reduce the risk of preterm labor but this depends on when it is consumed, according to the latest evidence. Find out more in the Pregnancy section of our Fish Oil Supplements Review, which includes our Top Picks among fish oil supplements.

9/25/2025

Fish for Retinopathy?

Omega-3 rich foods like fish may lower diabetic retinopathy risk, but benefits may be greater for people with type 2 than type 1 diabetes, according to a recent analysis. Get the details in the Retinal Disease section of our Fish Oil Supplements Review, which includes our Top Picks among fish oil supplements.

10/13/2025

How Much Does Fish Impact Omega-3 Levels?

A large study showed the effect that fish consumption had on levels of the omega-3s EPA and DHA in the body. The findings may surprise you. For details, see our Fish Oil Review, which includes our Top Picks for fish oil and algal oil.

11/11/2024

Fish Oil for Psychosis?

Did taking fish oil help prevent the onset of psychosis among people at high risk? Find out what a study showed in the Psychosis and schizophrenia section of our Fish Oil Supplements Review, which includes our Top Picks for fish oil.

12/19/2024

Fish Oil for Prostate Cancer?

Did taking fish oil slow the progression of prostate cancer? Find out what a recent study showed in the Cancer section of our Fish Oil Supplements Review, which includes our Top Picks for fish oil.

1/02/2025

Fish Oil for Long COVID?

Does taking fish oil improve symptoms of long COVID such as shortness of breath, cough, fatigue, lack of taste, or loss of smell? Find out what a recent study showed in the COVID-19 section of our Fish Oil Supplements Review, which includes our Top Picks for fish oil.

5/29/2024

Fish Oil & Atrial Fibrillation

Be aware that regular use of fish oil supplements may increase the risk of atrial fibrillation. See the Concerns and Cautions section of our Fish Oil Supplements Review for the latest information. Also see our Top Picks among fish oil supplements.

8/29/2024

Fish Oil to Prevent Eczema?

Taking fish oil during pregnancy may decrease, or greatly increase, the risk of eczema in offspring depending on the mother’s genes, according to a recent study. Get the details in the During pregnancy: Effects on Children section of our Fish Oil Supplements Review, which includes our Top Picks for fish oil.

9/24/2024

Fish Oil Plus Statins for Heart Disease?

Did taking high-dose EPA (from fish oil) reduce cardiovascular events among people with coronary artery disease who were already taking statins? And was it safe to do this? Find out what a recent study showed in the Taking with statins section of our Fish Oil Supplements Review, which includes our Top Picks for fish oil.

9/26/2024

Fish Oil to Prevent Depression?

Did taking fish oil reduce the recurrence of depression? Find out what a recent study showed in the Depression section of our Fish Oil Supplements Review, which includes our Top Picks for fish oil.

Also see: What are the best supplements for depression and anxiety?

3/05/2026

Can Prenatal Fish Oil Reduce Kid’s Colds?

Does taking fish oil during pregnancy lower the risk of respiratory infections in kids? Find out in our Fish Oil Supplements Review, which includes our Top Picks for fish and algal oil supplements.

1/29/2026

Fish Oil & Arteries

Can taking fish oil help reduce plaque in the arteries of people with type 2 diabetes? Find out what a recent study showed in our Fish Oil Supplements Review, which includes our Top Picks for fish oil.

2/02/2026

Fish Oil for Stress Relief?

Did fish oil help people manage stress in a recent study? Get the details in our Fish Oil Supplements Review, which includes our Top Picks for fish oil.

1/05/2026

Fish Oil for Depression?

A new study looked at whether the omega-3s in fish oil could ease depression symptoms in teens. See the results in the Depression section of our Fish Oil Supplements Review, which includes our Top Picks for fish oil.

11/10/2025

Fish Oil Helps Those on Dialysis

Taking fish oil greatly reduced cardiovascular events among people on dialysis for kidney disease. Get the details in our Fish Oil Supplements Review, which includes our Top Picks for fish oil.

4/09/2026

Fish Oil for Diabetes?

Does taking fish oil help control blood sugar in people with Type 2 diabetes? Find out what a recent study showed in our Fish Oil Supplements Review, which includes our Top Picks for fish oil.

9/07/2022

Fish Oil + Statins for "Bad" Cholesterol

Does adding high-dose fish oil to statin therapy help reduce "bad" cholesterol? Find out what a recent study showed in the Taking with statins section of our Fish Oil Supplements Review.

9/07/2022

Fish Oil & Irregular Heart Rhythm

Is fish oil supplementation linked with irregular heart rhythm (i.e., atrial fibrillation)? Find out what a recent study showed in the Concerns and Cautions section of our Fish Oil Supplements Review.

9/30/2022

Fish Oil for Muscle Strength?

Does supplementing with high-dose fish oil improve muscle strength or endurance in older women and men? Find out what a recent study showed in the Muscle, Strength and Falls section of our Fish Oil Supplements Review.

Also see our article about supplements to consider using when exercising (and ones to avoid).

8/16/2022

Microplastics in Fish Oil?

A CL member asked if they should be concerned about microplastics in fish oil supplements. Find out in our Fish Oil Supplements Review.

6/14/2022

Fish Oil For Dry Eye?

Can taking fish oil reduce dry eye in older men and women? Find out what a recent study showed in the What It Does section of our Fish Oil Supplements Review.

Also see our CL Answer about Supplements for Dry Eye.

4/05/2022

Fish Oil for Mild Cognitive Impairment?

Can supplementing with DHA-rich fish oil help people with mild cognitive impairment? Find out what a recent study showed in our Fish Oil Supplements Review.

Also see our answer to the question: Do any supplements or foods help with brain function, like memory and cognition?

2/18/2022

Fish Oil for Fatty Liver?

Can fish oil supplementation help reduce liver fat and fibrosis in people with non-alcoholic fatty liver disease (NAFLD)? Find out what a recent study suggests in the Liver Disease section of our Fish Oil Supplements Review.

Also see our article about Supplements for Fatty Liver Disease.

3/21/2024

Fish Oil for Migraines?

Fish oil may reduce the frequency of migraine headache, although a recent study suggested the benefit may depend on gender. For details, see the Migraine Headache section of our Fish Oil Supplements Review, which includes our Top Picks.

Also see: Do any supplements or foods help with migraine? Do any trigger migraine?

12/12/2023

Fish Oil & Retinopathy

Does taking fish oil decrease the risk of developing retinopathy in people with diabetes? See what a major study found in the Retinal Disease section of our Fish, Krill, and Algal Oil Supplements Review. Also see our Top Picks among omega-3 supplements.

6/27/2023

Fish Oil for Depression

Did taking fish oil decrease symptoms of major depression in young people? See what a new study found in the Depression section of our Fish Oil Supplements Review.

Also see: What are the best supplements for depression and anxiety?

7/21/2023

Fish Oil & Atrial Fibrillation

Very high-dose fish oil has been shown to increase the risk of atrial fibrillation, a heart rhythm problem. A new study suggests why. Get the details in the Concerns and Cautions section of our Fish Oil Supplements Review.

3/14/2023

Heart Rhythm Risk with Fish Oil

Be aware that high-dose fish oil supplementation increases the risk of atrial fibrillation. Get the details in the Concerns and Cautions section of our Fish Oil Supplements Review.

2/22/2023

Fish Collagen?

A CL member asked whether fish or other marine sources of collagen are good alternatives to collagen from chicken, pigs, or cows, and if there are plant-based sources of collagen. Find out about fish collagen and learn about "plant-based" collagen boosters in our Collagen Supplements Review. Also see our Top Picks among collagen supplements.

11/04/2022

Alternatives to Rx Omega-3s

A CL member who was prescribed Vascepa to lower triglycerides asked if any fish oil supplements are comparable but less expensive. Find out which fish oil supplements are comparable to prescription omega-3s in our Fish Oil Supplements Review.

10/02/2020

Algal Oil for Attention?

Does algal oil high in DHA improve memory and attention in children? See what a new study found in the What It Does section of Fish and Marine Oil Supplements Review. Also learn about fish oil for enhancing memory in older people and those with age-related cognitive decline, and see our Top Picks for fish oil.

11/15/2020

High-Dose Fish Oil Concern

A major study showed an increased risk of a serious heart condition with high-dose fish oil. Get the details in the Concerns and Cautions section of the Fish Oil Supplements Review. Also see our Top Picks among omega-3 oils.

10/31/2020

Fish Oil & Vitamin D for Macular Degeneration?

Can taking fish oil and vitamin D reduce the risk of age-related macular degeneration (AMD)? See what a large study found in the Eye Disease section of the Fish Oil Supplements Review. Also see the Vision Supplements Review for our tests of vision supplements, including those that most closely resemble the AREDS2 formula and our Top Picks among products.

7/17/2021

Fish Oil and Fatty Liver Disease?

Can taking fish oil over a lifetime increase the risk of developing fatty liver disease? Find out in the Concerns and Cautions section of the Fish Oil Supplements Review.

7/27/2021

Fish Oil and Colon Cancer

Does fish oil supplementation decrease the risk of abnormal colorectal growths or other changes associated with colorectal cancer? See what a new study found in the Cancer section of our Fish Oil Supplements Review.

7/31/2021

Statins Plus Fish Oil?

Can taking high-dose omega-3s decrease triglyceride levels in people taking a statin drug? See what a new study found in the Taking With Statins section of our Fish Oil Supplements Review. Also see our Top Picks among fish oil supplements, including highly concentrated products.

8/21/2021

Omega-7s for Muscle Pain?

Can supplementation with omega-7 fatty acids (from fish oil) reduce muscle pain or inflammation in the body? See what a new study found, and learn if omega-7s have other benefits in the omega-7 section of our Fish Oil Supplements Review. Also see how much omega-7 we found in popular fish oil products.

11/18/2021

Fish Oil for COVID?

Does taking concentrated fish oil reduce hospitalizations or deaths in people with COVID? Find out what a study showed in the COVID section of our Fish and Marine Oil Supplements Review.

3/18/2020

EPA vs. DHA from Fish Oil

Some marine-based oils are higher in either EPA or DHA — key omega-3 fatty acids -- but does it matter? See what a recent study found in the What to Consider When Buying section of the Fish and Marine Oil Supplements Review. Also see our Top Picks among fish and marine oils.

6/27/2020

Fish Collagen Allergy

Be aware that some people may be allergic to fish collagen even if they don't respond to common fish allergy tests, according to a recent study. Get the details in the Concerns and Cautions section of the Collagen Supplements Review. Also see our Top Picks for collagen supplements for skin and for joints.

4/16/2016

How Fish Oil May Help With Depression

Studies have shown that fish oil can help some people suffering from major depression. A recent study suggests how it may work. For details, see the "What It Does" section of the Fish Oil Supplements Review >>

8/02/2016

Fish Oil Helps After Heart Attack

High-dose fish oil supplementation improved the heart's ability to pump blood in people recovering from a heart attack, a recent study found. Get the details in the "What It Does" section in our Fish Oil Supplements Review >>

5/10/2016

Fish Oil & Antidepressants

Several studies suggest that fish oil can help people suffering from major depression. A new study indicates that it can have additive benefit for people already taking a prescription antidepressant. The amount and type of omega-3's seem to make a difference. Get the details in the "What It Does Section" of the Fish Oil Supplements Review >>

7/16/2016

Fish Intake During Pregnancy Increases Child's IQ

Consuming fish during pregnancy is associated with increased IQ in children, according to a recent study. Get the details in the Fish Oil and Omega-Fatty Acid Supplements Review >>

6/24/2015

Fish Oil for Dry Eye

A large study of computer-using young men and women experiencing dry eye found that fish oil significantly improved symptoms. Benefits have also been reported in postmenopausal women with dry eye. Details, including dosage, are found in the "What It Does" section of the Fish Oil Supplements Review >>

7/13/2018

Fish Oil for Depression?

Several studies have evaluated omega-3 fatty acids to decrease the severity of depression. Find out if it works in the Depression section of the Fish Oil and Omega-3 Fatty Acid Supplements Review. (Also see our Top Picks among fish oil supplements.)

11/29/2016

Fish Oil for Psychosis?

no added benefit from giving fish oil in conjunction with other psychiatric therapy. For details, including dosage, see the "What It Does" section of the Fish Oil Supplements Review >>

1/20/2017

Fish Oil and Bleeding Risk

A recently reported tragic case highlights the concern over taking fish oil when on a blood-thinning medication. For more information, see the "Cautions and Concerns" section of the Fish Oil Supplements Review (which includes our tests of products) >>

2/13/2018

Fish Oil for Ulcerative Colitis

A special formulation of high-dose fish oil was found to help people with ulcerative colitis remain in remission in a placebo-controlled study. It also reduced levels of a key marker of inflammation. For details, see the Arthritis and Other Inflammatory Diseases section of the Fish Oil Supplements Review.

4/14/2018

Fish Oil for Dry Eye?

A major study evaluated the effects of supplementing with the omega-3 fatty acids EPA and DHA in people with dry eye. Get the results and details in the What It Does section of the Fish Oil Supplements Review. (Also see our Top Picks among fish oil supplements).

4/21/2018

Fish Oil for Cognition?

Does giving older people a high dose of fish oil help them with memory and thinking? A recent study helped answer this question. Get the answer and details in the What It Does section of the Fish Oil Supplements Review.

11/19/2016

Fish Oil for Strength?

A daily dose of fish oil increased strength in women who did resistance exercise, but not in men, according to a new study. Get the details in the "What It Does" section of the Fish Oil Supplements Review >>

12/05/2017

Fish Oil for Stress?

A recent study investigated whether taking fish oil rich in the omega-3 fatty acid EPA would reduce chronic stress. See the results in the "What It Does" section of the Fish Oil Supplements Review >>

12/17/2019

Fish Oil for ADHD?

Evidence is emerging that some ADHD patients may derive limited benefits from supplementing with omega-3 fatty acids. Get the details in the ADHD section of the Fish Oil Supplements Review. Also see our Top Picks for fish oil.

1/03/2017

Reducing Asthma Risk in Children With Fish Oil

A major new study showed that giving fish oil to pregnant women reduces the risk of asthma and wheezing in their offspring. For details, see the "What It Does" section of the Fish Oil Supplements Review >>

7/21/2020

Omega-3s and the Brain

To raise levels of DHA and EPA in the brain, large doses are needed according to a recent study. Even larger doses are needed by people with a gene associated with increased risk of Alzheimer's. While the study did not show an effect on people's cognitive scores, it may help explain why some studies with fish oil show little effect. For details, see the What It Does section of the Fish Oil Supplements Review. Also see our Top Picks among fish oils.

5/22/2011

Fish Oil Helps Treat Depression

A recent study showed that fish oil taken daily was associated with a remission of depression in 41% of people taking the supplement. The patients were women in a nursing home setting. The dose given was fairly high but treatment was well tolerated. The amounts of EPA and DHA taken daily and more information are found in our Product Review of Fish Oil Supplements. More >>

3/09/2011

Fish Oil Helps in Chemotherapy

A recent study in lung cancer patients showed that those using fish oil supplementation during initial chemotherapy tended to maintain their muscle and total weight while those who did not lost 5 lbs of weight on average (2.2 lbs of which was muscle). See the Fish Oil (Omega-3) Product Review for more details, including the dosage used. More >>

11/03/2013

Too Much Fish Oil May Cause Adverse Effects

Recent animal studies using EPA and DHA from fish oil suggest that very high intakes may dampen immunity. Might you be getting too much? Find out in the update to the Fish Oil and Omega-3 Fatty Acid Supplements Review>>

1/31/2014

Fish Oil / Alpha-Lipoic Acid for Alzheimer's

A new study found that fish oil and alpha-lipoic acid can slow cognitive and functional decline in people with Alzheimer's disease. Get the details in the Fish/Marine Oil Supplements Review >>  and the Alpha-Lipoic Acid Supplements Review >>

9/16/2012

Fish Oil Benefit Questioned

There are many potential benefits from supplementing with the omega-3 fatty acids found in fish oil, but the most widely-touted benefits -- reducing the risks of heart disease and stroke -- are now in doubt. Read about the latest studies in the update to the Fish Oil (EPA & DHA) Supplements Review, which includes our product tests and quality ratings. More >>

6/16/2013

Fish Oil and Stress

A new study shows that fish oil may slightly blunt some of the effects of mental stress. Get the details, plus our quality ratings of 74 supplements, in the updated Fish Oil and Omega-3 Fatty Acid Supplements Review >>

5/21/2026

Omega-3 Absorption: Krill vs Fish Oil

Are the omega-3 fatty acids better absorbed from krill oil than from fish oil? See what the latest research shows in our Omega-3 Supplements Review + see our Top Picks for fish oil, krill oil, and algal oil.

8/05/2024

Fish Oil to Fight Alzheimer’s?

Does taking fish oil daily slow changes in the brain associated with the development of Alzheimer's disease? Find out what a recent study showed in the Alzheimer's disease section of our Fish Oil Supplements Review, which includes our Top Picks.

7/18/2025

Fish Oil for Burning Mouth?

Did taking fish oil help reduce pain in people with burning mouth syndrome (which causes unexplained scalding sensations in the mouth)? Find out what a recent study showed in the What It Does section of our Fish Oil Supplements Review, which includes our Top Picks.

9/03/2025

DHA During Pregnancy

Does taking high-dose DHA during pregnancy have cognitive benefits for infants? See what research suggests in the Pregnancy section of our Fish Oil Supplements Review, which includes our Top Picks fish oil supplement for pregnant women as well as our Top Pick among highly concentrated fish oils.

4/07/2013

Omega-3s Linked to Less Heart Disease and Longer Life

A study among older individuals who did not use fish oil supplements showed that those with higher levels of omega-3 fatty acids in their blood were far less likely to have a heart attack or arrhythmia and were 27% less likely to die during the 14-year study. The reserchers calculated how much EPA and DHA a person should consume to reach this higher blood level and noted that further increases yeild little additional benefit. Get the details, as well as how to get omega-3s from foods, in the updated Fish Oil Supplements Review »

10/03/2015

Fish Oil for Depression

A small study found that taking EPA and DHA daily significantly reduced depression in young men and women. Get the details, including dosage, plus our tests of popular products, in the Fish Oil and Omega-3 Supplements Review >>

11/11/2015

Fish Oil Freshness

50% of omega-3 fatty acid supplements recently purchased by researchers in Canada failed tests for freshness, exceeding limits for oxidation. Although the study raises some important issues, it also had significant shortcomings. Get the details in the Fish Oil and Omega-3 Fatty Acid Supplements Review (Including Krill, Algae, Calamari, Green-lipped Mussel Oil) >>

8/31/2014

Taking Fish Oil with Sterols

A new study found that adding EPA and DHA from fish oil to a spread containing plant sterols is not a problem and may provide additional benefit for those with high cholesterol levels. For more information, including dosage amounts, see the update in the Review of Cholesterol-Lowerers >> 

1/31/2017

Omega-3s for Arthritis

A review of twenty-two clinical studies using omega-3 fatty acid supplements from various marine sources (fish oil, mussel oil, etc.) found they could be effective in reducing rheumatoid arthritis pain, particularly when the oils had a certain ratio of EPA to DHA. The oils were not effective for osteoarthritis. For more details, see the "What It Does" section of the Fish Oil Supplements Review (which includes our tests of products) >>

9/17/2019

Omega-3s for Cognition?

Several studies have attempted to boost cognition and memory in healthy people using omega-3 supplements from fish or krill oil. Find out if they succeeded, including a recent study among adolescents, in the Memory Enhancement in Healthy Individuals section of the Fish Oil Supplements Review. Also see our Top Picks among products.

9/10/2019

Best Supplement for Depression

Which supplement has the strongest evidence of benefit for treating mental disorders? The answer is a particular form of fish oil to treat depression, according to a new analysis. For details, see the Depression section of the Fish Oil Supplements Review. Also see our Top Picks among products.

6/05/2018

Krill Oil for Strength?

Evidence from several studies suggests that fish oil can help modestly improve muscular strength and/or endurance and enhance the effects of training. A recent study investigated whether krill oil can do the same. See the results in the What It Does section of the Omega-3 Fatty Acid Supplements Review (Fish, Krill, and Algal Oils). Also see our Top Picks among products in this category.

8/23/2016

Omega-3s and Diabetic Eye Disease

Getting the omega-3 fatty acids EPA and DHA from eating fish is associated with a much lower risk of developing sight-threatening retinopathy in diabetics, according to a recently published study. The same benefit has been shown in non-diabetics. But do omega-3 supplements help? Find out in the "What It Does" section of the Fish Oil Supplements Review >>

6/24/2015

Problem with Too Much Krill Oil

Researchers recently gave overweight men a very large daily amount of krill oil (with a smaller amount of fish oil) with the hope it would improve their insulin sensitivity. Unfortunately, the opposite happened, suggesting that the oil could increase the risk of diabetes and cardiovascular disease. Details about the study, including dosage, are found in the "Concerns and Cautions" section of the Fish Oil and Omega-3 Fatty Acid Supplements Review (Including Krill, Algae, Calamari, Green-lipped Mussel Oil) >>

4/08/2017

Omega-3s for Age-Related Cognitive Decline?

A recent study found DHA and EPA from fish oil did not slow cogntive decline in older adults with cognitive difficulties. However, other studies suggest there may be a benefit if taken before the onset of cognitive decline or dementia. For details, see the "Age-Related Cognitive Decline" section of the Fish Oil and Omega-3 Fatty Acid Supplements Review >>

4/09/2019

Powerful Combination for Alzheimer's

Fish oil can help people with Alzheimer's disease but, as a new study suggests, only when they are getting enough of another nutrient. Get the details in the What It Does section of the Fish Oil Supplements Review. Also see our Top Picks among products.

3/22/2022

Fish Oil: Cognitive Benefit in Healthy People?

Does fish oil supplementation improve cognition in healthy people? See what a recent study showed in the Memory Enhancement in Healthy Individuals section of our Omega-3 Fatty Acid Supplements Review.

Also see our answer to the question: Do any supplements or foods help with brain function, like memory and cognition?

7/12/2022

Does DHA Lower Alzheimer's Risk?

Older people with high levels of the omega-3 fatty acid DHA were found to have a lower risk of developing Alzheimer's disease, according to a recent analysis. Does this mean that older people should be supplementing with DHA or fish or other marine oils? Find out in the Alzheimer's Disease section of our Fish and Marine Oil Supplements Review.

2/11/2022

Omega-3s for Fall Prevention?

Can omega-3 supplementation help reduce falls in older men and women? See what a study found in the Muscle, Strength and Falls section of our Fish Oil/Omega-3 Fatty Acid Supplements Review. Also, see our Top Picks among fish oil supplements.

2/10/2023

Fish Oil for Boosting Curcumin?

Since the absorption of curcumin is increased when taken with a fatty meal, would taking it with fish oil have the same benefit? Find out in our CL Answer about the best way to take curcumin.

7/27/2021

What Is Omega-10?

What is an "omega-10" supplement and are these products better than omega-3 fatty acid supplements such as fish oil? Find out in our Fish Oil Supplements Review.

6/22/2021

DHA & Preterm Birth

Can the risk of preterm birth be reduced when pregnant women supplement with an the omega-3 fatty acid? See what a new study found in the What It Does section of our Fish Oil Supplements Review. Also see our Top Picks among fish oil supplements, including prenatal products.

12/16/2020

Omega-7s to Lower Cholesterol?

Can taking sea buckthorn, a source of omega-7 fatty acids, lower cholesterol in people with high cholesterol levels? Find out what a recent study found in the Omega-7 Fatty Acids section of our Fish Oil Review. Also, see our Top Picks among fish oil supplements.

8/14/2020

Eggshell Membrane + Fish Oil for Joint Pain?

Both eggshell membrane and fish oil have been shown to bring modest reduction in joint pain, but does taking these ingredients together have greater benefit? Find out what a new study showed in the What It Does section of the Collagen Supplements Review. Also see our Top Pick among collagen supplements for joints and for skin.

5/05/2025

How Cooking Affects Microplastics in Fish

The way in which a fish is cooked can affect its level of microplastic particles, according to a recent study. Get the details in the Concerns and Cautions section of our Tuna, Salmon, Sardines & Herring Review, which includes our Top Picks for tuna, salmon, sardines and herring.

6/16/2025

Should You Check Your Omega-3 Level?

There are several tests to measure omega-3 fatty acid levels in your blood (e.g., Omega-3 Index, OmegaCheck, and OmegaScore). Find out how they compare and if it’s worth using any of them in the ConsumerTips section of our Fish Oil Supplements Review, which includes our Top Picks among fish oil supplements.

10/07/2024

Chia to Lower Triglycerides?

Did adding chia seeds to the diet lower triglyceride levels? And how did this compare to fish oil supplementation? See what a recent study found in our Chia Seeds Review, which includes our Top Picks for chia seeds.

Also see our Top Picks among fish oil supplements, including highly concentrated products.

10/24/2024

Omega-3 Supplements & Hemorrhage Risk

Many experts recommend intake of the omega-3’s EPA and DHA during pregnancy, but this may not be advisable during late pregnancy, as a new study found such intake to be associated with increased risk of postpartum hemorrhage. Get the details in the Concerns and Cautions section of our Fish Oil Supplements Review, which includes our Top Picks among fish oil supplements.

Also see our Top Picks among prenatal multivitamins.

5/21/2026

Fish Oil May Accelerate Cognitive Decline

A recent study linked omega-3 supplements with faster cognitive decline -- an unexpected finding. Get the concerning details in our Fish Oil Supplements Review.

4/06/2026

Krill Oil for Back, Hip, and Knee Pain?

Can krill oil ease chronic muscle and joint pain in older people? See what a new study found in our Fish Oil Supplements Review, which includes our Top Picks for fish oil and krill oil.

1/17/2016

Omega-3's and Cognition

Studies in older individuals have shown that omega-3 fatty acid intake from fish oil may improve certain areas of mental functioning and reduce age-related cognitive decline. Benefits have also been found in younger individuals.

A study has been underway which evaluates the effects of krill oil in adolescents with lower educational performance. It was recently reported that baseline testing (before starting krill) of the students showed a positive association between levels of EPA + DHA in their blood and performance on some, but not all, measures of cognitive performance. Get the details in the Fish Oil and Omega-3 Fatty Acid Supplements Review (Including Krill, Algae, Calamari, Green-lipped Mussel Oil) >>

7/10/2014

Don't Be Fooled by "Good Source of Omega-3s" Claim

Over the years, ConsumerLab.com has pointed out that products sometimes claim to provide a percentage of the Daily Value (DV) of omega-3 or -6 fatty acids, even though no such Daily Value has been established. Now, the FDA has prohibited certain related statements on omega-3 supplement and food labels that could mislead consumers into thinking a product provides some percentage of this imaginary amount. Get the details, including what to watch out for on labels, plus our tests of fish oil and other omega-3 fatty acid supplements, in the updated Fish Oil and Omega-3 Fatty Acid Supplements Review (Including Krill, Algae, Calamari, Green-lipped Mussel Oil) >>