Product Reviews and Information for Heart Health

4/11/2023

How Much Caffeine in Decaf?

Find how much caffeine is in decaffeinated coffee in our article about coffee and heart health.

10/15/2021

How Coffee Helps the Heart

A recent study may help explain how moderate coffee consumption reduces the risk of heart disease. Get the details in our updated answer to the question: Is drinking coffee good or bad for heart health?

12/03/2021

Pesticides in Coffee?

A member recently asked if coffee beans or ground coffee might contain enough pesticide residue to be a health concern. Find out in our updated CL Answer about Coffee and Heart Health.

12/07/2021

Can Warm Coffee Trigger Burning Mouth Syndrome?

A member asked if anyone else had experienced "burning mouth syndrome" after drinking warm coffee. Find out if drinking coffee can trigger symptoms of this known condition in the Safety section of our updated article about Coffee and Heart Health.

3/17/2021

Does Coffee Consumption Lower Cardiovascular Risk, or Is It the Other Way Around?

New study results may undermine the association between moderate coffee consumption and reduced risk of cardiovascular disease. Find out in our updated answer to the question: Is drinking coffee good or bad for heart health?

7/21/2021

Coffee and Heart Rhythm Risk

Is coffee consumption associated with the risk of atrial fibrillation and other arrythmias? See the latest findings in our article about Coffee and Heart Health.

8/03/2021

Coffee and Dementia?

Can drinking coffee increase or decrease the risk of dementia? A cause-and-effect relationship has not been established but some striking associations were recently found based on consumption levels. We've added the details to the Safety section of our article about Coffee and Heart Health.

8/10/2021

Coffee and Arterial Stiffness

Does drinking coffee increase arterial stiffness, a predictor of heart disease? Find out what research shows in our updated answer about Coffee and Heart Health.

2/23/2022

Coffee and Heart Health

Drinking moderate amounts of one type of coffee, but not another, was linked to a reduced risk of heart attack and stroke in a recent analysis. Get the details in our updated article about Coffee and Health.

7/12/2022

Citrulline for Heart Health?

Does supplementing with citrulline reduce blood pressure and improve heart function in people with heart failure? Find out in the Citrulline section of our L-Arginine Supplements Review (citrulline is converted to L-arginine in the body).

9/02/2022

Black Tea for Heart Health?

Drinking green tea has been linked with reduced risk of death due to heart disease, but how about black tea? See what a recent study found in the Cardiovascular Disease section of our Green Tea Supplements and Drinks Review.

9/28/2022

Beta-glucan Supplements for Lowering Cholesterol?

Beta-glucan from cereals such as oats and barley may help lower cholesterol, but be aware that other sources of beta-glucan (including some supplements) may not. Find out in our CL Answer about supplements for heart health.

4/18/2023

Lowering Cholesterol with Beta-glucan?

Consuming oats, which contain beta-glucan, can help lower cholesterol. But do beta-glucan supplements help? See what a study showed in the Benefits section of our Oat Cereals Review, which includes our Top Picks among oat products.

Also see our article about supplements for heart health to learn which other supplements may help lower cholesterol.

4/28/2023

Rinsing Coffee Filters?

Bleached coffee filters can contain a small amount of dioxin (a harmful chemical), but there’s a way to reduce the amount. Find out in the Dioxins in coffee filters section of our article about coffee and heart health.

9/08/2023

Instant Coffee and Cholesterol

Does instant coffee contain the same cholesterol-raising compounds found in regular, unfiltered coffee? Find out in our article about coffee and heart health.

11/17/2023

Plasticizers in Coffee?

Does brewing coffee that comes in plastic capsules cause BPA or phthalates to leach into coffee? Find out what research has shown in the Other Concerns with Coffee section of our article about coffee and heart health.

10/27/2023

Black Currant & Cholesterol

Did supplementing with black currant extract reduce cholesterol levels among women in menopause? Find out what a recent study showed in our article about supplements for heart health.

4/04/2023

Coffee’s Effects on Heart Rhythm, Sleep

Does drinking caffeinated coffee cause heart palpitations, or reduce sleep? See what a recent study found in our updated article about coffee and heart health.

11/08/2022

Potassium Added to Starbucks Coffee?

A competitor of Starbucks claims that Starbucks is adding potassium to some of its coffee. Get the details obtained by ConsumerLab in our article: Is drinking coffee good or bad for heart health?

12/23/2022

Licorice for Lowering Cholesterol?

Can supplementation with licorice help lower cholesterol? Find out in our updated CL Answer about supplements for heart health.

12/27/2022

Coffee and High Blood Pressure

Even modest amounts of coffee may increase risk of heart attack or cardiovascular-related death in people with very high blood pressure, according to recent study. Get the details in our updated article about coffee and heart health.

Also see this recent update: Coffee's Effects on Vitamins & Minerals

1/06/2021

Coffee and Heart Disease

Research published this week suggests a link between a moderate coffee consumption and reduced risk of cardiovascular disease and death. Get the details in our article about Coffee and Heart Health.

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.

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.)

12/14/2019

Heart Disease & Magnesium

Women with the lowest daily intakes of magnesium were found to have the highest risk of fatal coronary heart disease in a recent study, which is consistent with other studies of magnesium and heart health. See the What It Does section of the Magnesium Supplements Review for details about this association. Also see our Top Picks among magnesium supplements.

6/29/2019

Fish Oil Heart Claim

You'll start seeing a new heart health claim on fish oil supplements as well as foods that provide the omega-3's EPA and DHA. While legal, the claim is a bit fishy. Get the details in the Fish Oil Supplements Review as well as the Canned Tuna and Salmon Review. Also see our Top Picks for fish oil supplements and canned fish.

9/04/2020

Coffee and Cholesterol

Drinking large amounts of coffee daily can increase cholesterol levels, according to a recent analysis. Get the details in our answer to the question: Is drinking coffee good or bad for heart health?

8/26/2020

Vitamin K & Heart Health

Can taking vitamin K supplements improve vascular stiffness or lower blood pressure in people with kidney disease? Find out what a recent study showed in the What It Does section of our Vitamin K Supplements Review. Also see our Top Picks for vitamin K.

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.

3/15/2024

Coffee and Brain Bleed?

Does drinking coffee increase the risk of brain bleeds? Find out what research suggests in our article about coffee and heart health.

2/09/2024

Coffee & Blood Pressure

Does drinking regular coffee increase blood pressure in people taking blood pressure-lowering medication? See what a recent study showed in our article about coffee and heart health.

12/19/2023

Coffee Creamers

We recently explained why milk might slightly reduce the heart health benefits of coffee. We were asked if this concern exists with products such as Lactaid, half-and-half, cream, coffee creamers, or non-dairy milks such as coconut, almond, or rice milk. See the answer.

1/30/2024

PQQ for Muscle Strength?

Did taking PQQ (pyrroloquinoline quinone) increase muscle strength or exercise endurance among older men and women? See what a new study found in our PQQ Supplements Review. Also learn if PQQ helps with memory and cognition or has heart health benefits, and see our Top Picks among PQQ supplements.

2/23/2024

Cold Brew Coffee Contamination?

Is cold brew coffee more likely to be contaminated with pesticides or microbes than regular, hot coffee? Find out in our article about coffee and heart health.

8/26/2024

Maple Syrup for Heart Health?

Did maple syrup have a better effect on heart-related risk factors in overweight adults than an equal amount of table sugar in a recent study? Find out in the Maple syrup section of our article about sweeteners, which includes our Top Picks among sweeteners.

11/14/2024

Hemp Seed Benefits?

What are hemp seeds and does eating them help with heart health, diabetes, or boosting testosterone? Find out in our article about the benefits, safety, and what to consider when picking a product.

Also see our test results for:

• Hemp protein
• Hemp seed oil
• Hemp milk
• Hemp extract

3/06/2025

Bergamot for Cholesterol?

Did taking citrus bergamot extract lower cholesterol in a recent study? Find out in our article about supplements and foods for heart health.

4/10/2025

TA-65 for Vision or Heart Health?

Does TA-65 (astragalus root extract) help people with macular degeneration or reduce blood pressure, cholesterol, or inflammation? Find out in our updated article about TA-65.

6/16/2025

Olive Oil: Too Much of a Good Thing?

Replacing less healthy fats in the diet with olive oil may be beneficial for heart health and maintaining a healthy weight, but recent studies suggest less benefit for cholesterol levels with too much olive oil, which may also stimulate fat cell production. Learn more in our Extra Virgin Olive Oil Review, including exactly how much olive oil may be beneficial. Also see our Top Picks for extra virgin olive oil.

6/08/2017

How To Get Vitamin K From Food

Many of the benefits of vitamin K - such as proper blood clotting and calcium utilization for bone and heart health - are associated with getting adequate vitamin K from foods. The good news? Brand new research has found much higher amounts of vitamin K2 (the form associated with cardiovascular benefits) in dairy foods than previously known. However, the amounts vary tremendously depending on whether these foods are full-fat, or reduced-fat or fat-free. Get the details in the "Vitamin K from food" section of the Vitamin K Supplements Review. If you're interested in a vitamin K supplement, see our Top Picks among brands.

6/01/2022

Ubiquinol for Heart Failure

Can supplementing with ubiquinol help people with diastolic heart failure? Find out what a recent study showed. Also see if CoQ10 helps with congestive heart failure in the Cardiovascular Health section of our CoQ10 and Ubiquinol Supplements Review.

5/15/2019

Glucosamine and Heart Disease

Does taking glucosamine affect your risk of developing cardiovascular disease? See what a large study recently found in the What It Does section of the Joint Health Supplements Review (Glucosamine, Chondroitin, MSM and Boswellia). Also see our Top Picks among joint health supplements.

7/26/2022

Phosphatidylcholine & Heart Risk?

Free choline can raise blood levels of TMAO, which has been linked with adverse health effects. But does phosphatidylcholine, a form of choline (and the main form in eggs), have similar effects on TMAO levels? Find out in our updated Answer to the question: Is there a danger in taking lecithin or phosphatidylcholine?

9/13/2022

Glucosamine & Heart Disease

Is taking glucosamine for arthritis linked to the risk of cardiovascular disease? Find out in the What It Does section of our Review of Joint Health Supplements.

5/24/2017

Stroke Risk with Calcium

A new study shows that high-dose calcium supplements may double the risk of stroke in men and women. The risk of heart attack is also increased, as shown in other studies. However, there are ways to take calcium without this risk and still get bone health benefits. For details, see the "Concerns and Cautions" section of the Calcium Supplements Review >>

5/31/2011

Niacin Concern Stops Cardiovascular Study

A clinical trial using high dose niacin (vitamin B₃) was recently stopped by the National Institutes of Health due to lack of benefit and a small increase in strokes. Patients in the study had cardiovascular disease and were already taking a statin drug to keep LDL ("bad") cholesterol levels low. The addition of high dose niacin was intended to increase HDL ("good") cholesterol, reduce elevated triglycerides, and, most importantly, reduce the risk of heart attacks and stoke. For more information, including the amount and type of niacin used in the study and additional information about niacin and niacin supplements, see the B Vitamin Supplements Review. More >>

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.

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 >>

4/05/2016

Vitamin D Improves Heart Output

A recent study in people with chronic heart failure (poor heart output) found that vitamin D improved heart output. However, the study did not achieve its main objective — to increase walking distance. The dose may have been to blame. For details see the "What It Does" section of the Vitamin D Supplements Review >>

3/01/2022

Heart Risk With Fizzy Pills and Powders

Be aware that supplements that "fizz" in water may be exposing you to potentially dangerous amounts of sodium. This was associated with higher risk of heart attack, stroke, or heart failure in a recent study.

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.

7/26/2022

Vitamin D and Heart Failure

Does high-dose vitamin D improve heart function in people with chronic heart failure? Find out what a recent study showed in the Cardiovascular disease, blood pressure, and cholesterol section of our Vitamin D Supplements Review.

4/29/2022

Vitamin K and Heart Valve Calcification

Can supplementation with the MK-7 form of vitamin K2 slow the progression of aortic valve calcification, a risk factor for cardiovascular disease? See what a new study found in the Heart Disease section of our Vitamin K Supplements Review.

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

9/18/2020

Vitamin D for Failing Hearts?

Does high-dose vitamin D help or hurt people with chronic heart failure? Find out what a new study showed in the Cardiovascular Disease section of Vitamin D Supplements Review, which also discusses cholesterol, blood pressure and heart attack risk. Also see our Top Picks for vitamin D.

11/30/2021

CoQ10 and Heart Failure

Can supplementing with ubiquinol, the active form of CoQ10, improve heart function in people with heart failure? See what a new study found in the What It Does section of our CoQ10 and Ubiquinol Supplements Review. Also see our Top Picks among CoQ10 and ubiquinol supplements.

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 >>

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) >>

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 >>

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.

8/04/2020

Ubiquinol & Heart Surgery

Ubiquinol (the active form of CoQ10) can have a beneficial effect on ailing hearts, but can taking it protect the heart around the time of aortic valve replacement? Find out what a recent study showed in the What It Does section of the CoQ10 and Ubiquinol Supplements Review. Also see our Top Picks for Ubiquinol and CoQ10.

11/01/2024

Arsenic in Water Linked to Heart Disease

Long-term exposure to arsenic in drinking water was linked to increased risk of ischemic heart disease in women, according to a recent study. Get the details in our Water Filter Pitchers Review. Also see how popular water filter pitchers compare on their ability to remove arsenic from water -- some remove at least 90%, while other remove less than 15%.

Also see our Top Picks among water filter pitchers.

3/31/2025

Calcium and Heart Disease

Can a person with coronary artery disease take a calcium supplement without increasing cardiovascular risk and, if so, what dose might be safe? Find out in the Heart attack and stroke risk section of our Calcium Supplements Review. Also see our Top Picks among calcium supplements.

4/07/2025

Heart Concern With Berberine

Life-threatening, abnormal heart rhythm has been linked with berberine use in several cases. Get the details in the Concerns and Cautions section of our Berberine Supplements Review.

6/11/2024

Xylitol & Heart Risk

The sweetener xylitol was recently linked with an increased risk of heart attacks, stroke, and death, although this does not prove cause-and-effect. Get the details in our article about sugar substitutes, which includes information about xylitol and 15 other low-calorie sweeteners.

6/14/2024

Is Xylitol in Toothpaste Unsafe?

Use of Xylitol was recently linked with increased risk of heart attacks, stroke, and death, but does xylitol in toothpaste or salivary stimulants for dry mouth pose a concern? Find out in our article about toothpastes and other dental products, which inlcudes our Top Picks.

Also, find out if intake of regular sugar has been linked with heart-related concerns.

12/19/2023

Caution With Quercetin and Heart Medication

Quercetin may interact with many medications, including one for irregular heart rhythm, according to preliminary research. See medications with which quercetin may interact in the Concerns and Cautions section of our Quercetin Supplements Review. Also see our Top Picks among quercetin supplements.

3/01/2022

Melatonin and Heart Palpitations?

Can taking melatonin cause heart palpitations? Find out in the Concerns and Cautions section of our Melatonin Supplements Review. Also see our Top Pick for melatonin.

3/15/2022

Probiotics to Lower Marker of Heart Attack Risk?

Some probiotics have been shown to modestly lower high cholesterol levels. Can they also lower levels of apolipoprotein B (apoB), a strong predictor of heart attack risk? See what recent research shows in the What It Does section of our Probiotics Supplements Review.

1/25/2022

Eggs and Heart Risk

Does eating one or two eggs daily increase the risk of heart attack? Find out what recent studies suggest in the Concerns and Cautions section of our Choline Supplements Review (eggs contain choline). Also see our Top Picks among choline supplements.

2/03/2023

Green Tea & Heart Disease

Find out how many cups of green tea per day is associated with lower risk of heart disease in the What It Does section of our Green Tea Supplements Review, and see our Top Picks for green tea.

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.

3/17/2023

Erythritol-Heart Link Questioned

Some websites have tried to dismiss the recently reported link between erythritol and heart-related adverse events. Find out why these suggestions are flawed in our article about sweeteners.

Also, find out why some monk fruit sweeteners are sweeter than others and learn about potential safety concerns with aspartame (in NutraSweet and Equal) and sucralose (in Splenda).

3/03/2023

Heart Risk from Erythritol Sweetener?

High intake of erythritol was linked to an increased risk of heart attack and stroke in a recent analysis. Should you be concerned? Find out in the Erythritol section of our CL Answer about sweeteners.

5/30/2017

Heart Risk Lower with Chocolate

Eating chocolate is associated with a reduced risk of developing atrial fibrillation, according to a large, long-term study. Atrial fibrillation is associated with higher risk of stroke, heart failure and other serious problems. Details about this and other benefits of chocolate are found in the "What It Does" section of the Chocolate and Cocoa Powders Review, which includes our findings for the flavanol content and contamination levels of popular products.

5/06/2017

Trouble Reported With Saw Palmetto

A 64 year-old man developed pancreatitis and heart block (dangerously slow heart rate) after supplementing with saw palmetto, according to a recent report. For details, see the "Cautions and Concerns" section of the Prostate Supplements Review >>

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 »

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. 

2/07/2015

Fewer Heart Disease Deaths Among Multivitamin Users

A new study found that multivitamin-mineral users were 35% less likely to die of heart disease than non-users over a period of about 20 years. The apparent benefit was greater for certain people and depended on the type of multi. For more details, as well as our product reviews, see the Multivitamin and Multimineral Supplements Review >> 

7/16/2016

Magnesium and Heart Disease

People with lower blood levels of magnesium were 36% more likely to die from heart disease than those with moderate levels according to a new, long-term study. For more details, see the "What It Does" section of the Magnesium Supplements Review >>

6/02/2013

Does CoQ10 Help the Heart?

It can for people with congestive heart failure, says a new study. Find out more about CoQ10, plus get ratings for 48 supplements in the updated Coenzyme Q10 and Ubiquinol Supplements Review >>

11/11/2012

Multivitamin and the Heart

Does taking a daily multivitamin reduce the risk of heart attack and stroke? No, according to a recently published, major U.S. study. Those who took the popular multi, however, were more likely to report a particular side effect than those who took placebo. For details, see the update in the Multivitamin Supplements Review. More >>

9/30/2012

Do Spreads Lower Heart Risk?

Buttery spreads like Smart Balance and Benecol claim to lower the risk of heart disease due to their phytosterols/stanols. These plant compounds can certainly help (by lowering cholesterol levels), but recent lawsuits challenge whether Smart Balance and Benecol provide enough sterols/stanols to claim a benefit. It turns out that one may, and one may not. Find out more and get our quality ratings of cholesterol-lowering supplements in the updated Cholesterol-Lowering Supplements Review >>

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 >>

5/28/2012

Calcium supplements may increase the risk of heart attack

A recent study found a much higher risk of heart attack among people who used calcium supplements than among those who did not. Increased calcium from food was not associated with increased risk. Some other recent studies have raised similar concerns about calcium supplementation. What does this mean for you? See our update to the Calcium Supplements Review for more information. More >>

3/07/2020

Olive Oil and Heart Disease

Does consuming olive oil instead of butter or margarine reduce the risk of heart disease? Find out what studies are showing, and the amounts of olive oil being used, in the What It Does section of the Olive Oil Review. Also see our Top Picks for olive 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.

4/25/2017

Choline May Increase Heart Risk

A recent study found that taking choline supplements increased the tendency for platelets to aggregate, a risk factor for heart disease, suggesting that choline supplements should be avoided. For details see the Concerns and Cautions section of the Choline Supplements Review >>

11/20/2018

Best Olive Oil for Heart?

This week, the FDA agreed that oils that are at least 70% oleic acid may claim to reduce the risk of coronary heart disease when substituted for saturated fats. Oleic acid is the dominant fatty acid in olive oil. However, our tests of popular extra virgin olive oils show that only some reach the 70% level. Get the details in the Extra Virgin Olive Oil Review. (Also see our Top Picks among extra virgin olive oils.)

11/06/2018

Lower Risk of Heart Disease with Fermented Dairy Foods

A study has shown a lower risk of heart disease to be associated with consumption of fermented, rather than non-fermented, dairy foods. However, only a certain type of fermented dairy was associated with the benefit. For details, see the Fermented Dairy section of the Probiotics Review. (Also see our Top Picks among probiotic products.)

8/28/2018

Chocolate for the Heart?

Studies suggest cardiovascular benefits from daily intake of cocoa flavanols, as found in dark chocolate. However, a new study, focusing on heart failure, suggests more limited intake. Get the details and our analysis in the Cardiovascular section of the Dark Chocolate, Cocoa Powder, and Nibs Review. (Also see our Top Picks for dark chocolate, cocoa powders, and more.)

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.)

12/23/2020

Eggs and Heart Disease Risk

Do women who eat eggs every day have a higher risk of heart disease or death? See what a new study found in the ConsumerTips section of the Choline Supplements Review.

5/08/2021

Eggs, Choline, & Heart Risk

The choline in eggs can raise levels of TMAO, a compound associated with higher risk of heart attack. A recent study compared the effects of eating eggs versus taking choline supplements on TMAO levels. Find out which increased TMAO levels the most. Also, see our Top Pick among choline supplements.

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.

6/22/2011

Does Taking Vitamin D Reduce the Risk of Heart Disease?

Earlier research has suggested an association between higher vitamin D levels in the blood and reduced risk of heart attack. But blood levels are affected by both sun exposure as well as intake of vitamin D. A new study shows that men with higher vitamin D intakes from foods and supplements have a 14% reduction in their risk of cardiovascular disease and stroke. However, the study found no reduction among women. The amount of vitamin D intake shown to be beneficial and possible reasons why a benefit was not found in women are provided in the updated "What It Does" section of our Product Review of Vitamin D Supplements. More >>

7/21/2021

Calcium, Vitamin D & Heart Risk

Does taking vitamin D reduce the cardiovascular risks associated with calcium supplementation? See what a new study found in the Concerns and Cautions section of our Calcium Supplements Review. Also see our Top Picks among calcium supplements.

10/02/2021

Artichoke for Lowering Cholesterol?

Can artichoke extract or juice lower elevated cholesterol? Find out what research suggests in our answer to the question: Which supplements or foods can help lower cholesterol and keep my heart healthy? Are there any to avoid?

8/21/2021

Mediterranean vs. Low-Fat Diet for Arteries

A long-term study in people with coronary heart disease compared the effects of a Mediterranean diet rich in olive oil with a low-fat diet. Find out which diet decreased atherosclerosis (plaque build-up in arteries) in the Cardiovascular Disease section of our Extra Virgin Olive Oil Review. Also see our Top Picks among extra virgin olive oils.

9/07/2021

Walnuts and Cholesterol

See if eating a small amount of walnuts every day helped lower cholesterol in older people in a recent study.

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

7/24/2021

Diatomaceous Earth for Cholesterol?

Can supplementing with diatomaceous earth lower cholesterol levels and is it safe? Find out in our updated answer to the question: Which supplements can help lower cholesterol and keep my heart healthy? Are there any to avoid?

7/31/2021

Bergamot for lowering cholesterol?

Can supplementing with citrus bergamot reduce high cholesterol levels? Find out what the research is showing in our updated answer to the question: Which supplements can help lower cholesterol and keep my heart healthy? Are there any to avoid?

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.

4/28/2020

Early Sign of Thiamin Deficiency

Thiamin (vitamin B1) deficiency can cause lasting neurologic damage and affect heart function. It can occur with poor nutrition and as a result of taking certain diuretics. A recent case highlighted an early sign of thiamin deficiency that involves the eyes. We've added this information to the Thiamin section of the B Vitamin Supplements Review. Also see our Top Pick for thiamin and B complexes that contain thiamin. You can also get thiamin from a good multivitamin.

1/14/2020

Tea & Heart Disease

Another study shows that people who drink tea are less likely to suffer from cardiovascular disease. Find out how much and what type of tea was associated with benefits in the Cardiovascular disease section of the Green Tea Review. Also see our Top Picks for green tea.

1/25/2020

Best Way to Cook With Olive Oil

Cooking can reduce levels of heart-healthy polyphenols in extra virgin olive oil (EVOO), but a new study showed how to minimize this loss. Get the details in the ConsumerTips section of the Extra Virgin Olive Oil Review. Also see our Top Picks among extra virgin olive oils.

8/25/2020

Calcium & Artery Calcification

Is there an increased risk of coronary artery calcification with the use of calcium supplements? Find out what a recent analysis showed in the Heart Attack and Stroke Risk section of the Calcium Supplements Review. Plus, learn how much calcium one needs per day and how much, if any, can come from supplements. Also see our Top Picks for calcium.

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.

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.)

12/10/2017

Lower Heart Risk With Olive Oil

Using olive oil was associated with a dramatic reduction in the risk of cardiovascular disease in a recent study. But what about using olive oil along with other oils? Get the results and learn more in the "What It Does" section of the Extra Virgin Olive Oils Review. Also see our Top Picks among extra virgin olive oils.

12/02/2018

Carnitine Heart Risk?

Supplementing with L-carnitine can raise blood levels of TMAO which can potentially advance atherosclerosis. However, the science is not clear, as suggested by a recent study. Get the details in the L-Carnitine section of the Acetyl-L-Carnitine Supplements Review.

10/20/2016

Vitamin D Sweet Spot

Having the right blood levels of vitamin D has many proven benefits, but too little and too much vitamin D can be problematic. A new study shows this also to be true in people with diabetes with regard to a type of nerve damage that can affect blood pressure and heart rate. For details see the "What It Does" section of the Vitamin D Supplements Review >>

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.

2/04/2017

Many Benefits of Magnesium

An analysis of studies involving more than one million people found that rates of stroke, heart failure, type 2 diabetes, and death were lower when intakes of magnesium were higher. For details see the "What It Does" section of the Magnesium Supplements Review (which includes our tests of products) >>

11/20/2011

No Benefit of Niacin with Statins

According to a recently published study, high dose niacin added to statin drug treatment does not further reduce the risk of heart attacks and stroke despite improvements in levels of HDL cholesterol and triglycerides. In fact, there was a small increase in strokes among those taking niacin. However, a role remains for high dose niacin in lipid treatment. For details, see the update to the B Vitamin Supplements Review.

10/13/2016

Heart Concern With Calcium Supplements

A study of American men and women found an increased risk of coronary artery calcification (atherosclerosis) among those who used calcium supplements compared to those who did not, despite the fact that higher total daily calcium intake was associated with a decreased risk of calcification. Other studies point in a similar direction, as described in the "Concerns and Cautions" section of the Calcium Supplements Review >>

10/10/2014

CoQ10 Benefit Takes Time

A large study found that a daily dose of CoQ10 reduced the chances of hospitalization or death by almost 50% in people with moderate to severe heart failure -- but only after being taken for an extended period of time. Find out how much CoQ10 was taken and for how long, and get our quality ratings and comparisons of CoQ10 supplements, in the updated CoQ10 and Ubiquinol Supplements Review >>

5/18/2017

What Iron Supplements Can and Cannot Do

Iron supplements can reduce fatigue in younger women and even improve learning in adolescent girls. If you give blood, taking iron reduces your time to recover by more than one month. However, a recent study found little benefit in giving iron to heart failure patients low in iron. Researchers have an idea why. For details about the uses of iron, see the "What It Does" section of the Iron Supplements Review, which includes our tests and comparisons of popular iron supplements.

6/28/2017

Some Concern About Theobromine in Dark Chocolate

ConsumerLab's tests of dark chocolates show them to contain about as much theobromine (a caffeine-related stimulant) as heart-healthy flavanols. So is all this theobromine good or bad? A recent study suggests that it may be an issue for people who need to control their blood sugar, while, on the positive side, it lowers LDL "bad" cholesterol. Get the details in the "Concerns and Cautions" section of the Cocoa Powders, Dark Chocolate, Extracts, Nibs, & Supplements Review, which includes comparisons of the amounts of theobromine in popular products, as well as amounts of flavanols, caffeine, and contaminants.

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.)

7/10/2018

Multivitamins & Cardiovascular Disease

Does taking a multivitamin reduce the risk of heart disease and stroke? See what a recent analysis concluded in the Background section of the Multivitamin Review. (Also see our Top Picks among multivitamins.)

5/19/2013

Optimum Level of Vitamin D

New research shows that blood levels which are too low or too high for vitamin D are associated with increased risk of heart attack and earlier death. Find the "sweet spot" for vitamin D levels as well as test results for 55 vitamin D supplements in the updated Vitamin D 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

Stimulant Supplements

Have you ever wondered what taking a stimulant supplement for weight management or energy might do to your body? Researchers recently gave Zantrex-3, Xenedrine EFX, Metabolift, or a brand of Guarana to young men while monitoring their heart rates and other vital signs, and recording side effects. The results raise concerns. Get the details, plus test results for 14 other supplements, in the updated Weight 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.

6/02/2023

Biotin Caution With Lab & At-Home Tests

High doses of biotin from supplements can interfere with a wide range of laboratory and at-home tests, including those for pregnancy, doping, COVID, and heart attacks. Get the details in the Biotin section of our B Vitamin Supplements Review.

Also see: Which vitamins and supplements should be stopped before getting blood work and laboratory tests?

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.

1/10/2023

Avoiding the Toxin Aconite

Aconite is a highly toxic plant compound that can cause dangerous heart arrhythmias and cardiac arrest. Find out which supplements may contain aconite and how to avoid it, in our answer to the question: How can I avoid aconite – a toxin – in Aconitum supplements?

2/10/2023

Pycnogenol For the Heart?

Does taking Pycnogenol (pine bark extract) reduce calcifications in the arteries in people with atherosclerosis? Find out what a study found in our CL Answer about Pycnogenol.

2/10/2023

Magnesium and Artery Calcification

Did magnesium supplementation slow coronary artery calcification in people with chronic kidney disease? See what a recent study found in the What It Does section of our Magnesium Supplements Review, which includes our Top Picks for magnesium.

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

6/17/2022

Supplements for POTS?

People with postural orthostatic tachycardia syndrome (POTS) experience a fast heart rate, dizziness, and other symptoms when standing. Can any supplements or lifestyle changes help? Find out in our answer to the question: Are there supplements that help treat POTS?

6/17/2022

L-carnosine for Cardio Fitness?

Does research support L-carnosine supplementation for improving cardio fitness? Find out what a study showed among people with heart failure in our updated CL Answer about L-carnosine.

4/22/2022

Vitamin E for Fatty Liver Disease?

Can supplementation with vitamin E benefit people with non-alcoholic fatty liver disease (NALFD)? See what the American Heart Association recently advised in the What It Does section of our Vitamin E Supplements Review.

Also see our answer to the question: Do any supplements help with fatty liver disease?

7/15/2022

Add Omega-3s to Statins?

Does adding omega-3 fatty acids to statin therapy reduce the risk of heart attack or death in people with high triglycerides? Find out what a recent study showed in the Use With Statins section of our Omega-3 Supplements Review.

1/25/2022

Probiotic to Lower Cholesterol?

Can taking a probiotic lower elevated cholesterol levels? See what a new study found in the Cholesterol-lowering section of our Probiotics Supplements Review. Also see our Top Picks for probiotics.

For other approaches to lowering cholesterol, see our answer to the question: Which supplements or foods can help lower cholesterol and keep my heart healthy?

2/01/2022

Olive Oil Lowers Risk of Death

Regular consumption of olive oil was associated with reduced risk of death from heart disease, cancer, and Alzheimer’s disease in a large, long-term study – but only if replacing certain other foods. Get the details in the What It Does section of our Extra Virgin Olive Oil Review. Also see our Top Picks among extra virgin olive oils.

2/11/2022

Black Garlic for Lowering Cholesterol?

Did aged black garlic extract help lower high cholesterol in a recent study? Find out in our Black Garlic section of our Garlic Supplements Review.

Also see our answer to the question: Which supplements or foods help lower cholesterol and keep my heart healthy?

8/26/2024

Lower Cholesterol with Nattokinase?

Does taking nattokinase along with red yeast rice lower cholesterol better than red yeast rice alone? Find out what a recent study showed in the Lowering cholesterol section of our Red Yeast Rice Supplements Review, which includes our Top Pick for red yeast rice.

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

9/03/2024

Statins & Vitamin K

Do statins (e.g., Lipitor, Crestor) affect blood levels of vitamin K and does vitamin K supplementation improve heart-related outcomes among people taking statins? Find out in the Concerns and Cautions section of our Vitamin K Supplements Review, which includes our Top Picks among vitamin K supplements.

Also see: When taking a statin drug like Lipitor or Crestor, are there supplements I should avoid or take?

12/16/2024

Melatonin for MS?

Does taking melatonin improve sleep or heart-rate control among people with multiple sclerosis? Find out what a recent study showed in the our Melatonin Supplements Review, which includes our Top Picks for melatonin.

Also see our article about supplements for multiple sclerosis.

1/06/2025

Heavy Metals in Hemp Seeds?

Testing of Manitoba Harvest Organic Hemp Hearts by a separate group identified levels of cadmium and arsenic it considered unsafe for children. See our take on these results in our article about hemp seeds.

9/19/2024

Lowering Cholesterol With Alfalfa?

Did taking alfalfa powder reduce elevated cholesterol levels? Find out what a recent study showed in the What They Do section of our Greens Supplements Review, which includes our Top Picks among "greens" supplements.

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

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.

10/17/2024

HPF Cholestene Discontinued?

A CL member noted that the red yeast rice supplement HPF Cholestene is no longer sold on Amazon and asked us if it is discontinued. We explain what’s going on in our Red Yeast Rice Supplements Review, which includes our Top Pick for red yeast rice.

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

11/04/2024

Can you get too much protein?

Proteins provide essential amino acids, but some evidence suggests that getting high amounts of two specific amino acids from foods may increase the risk of heart disease. Learn how to limit exposure to these amino acids in our article: What’s the Best Way to Get High-Quality Protein from Food?

Also see our Top Picks in our Protein Powders Review.

3/17/2025

More Xylitol Controversy

Xylitol was linked with possible increased risk of heart-related adverse events in 2024, but a recent commentary questioned the link. Find out why in the Xylitol section of our article about sugar substitutes, which includes our Top Picks for use in hot drinks, cold drinks, for baking, and along with keto diets.

5/12/2025

Vitamin K2 (MK-7) to Slow Artery Calcification?

Did taking the MK-7 form of vitamin K2 for one year reduce signs of coronary artery calcification among pre- or postmenopausal women? See what a recent study found in the Heart disease section of our Vitamin K Supplements Review, which includes our Top Picks for the MK-7 form of vitamin K.

7/29/2024

Too Much Olive Oil?

Consuming little extra virgin olive oil (EVOO) may be more heart-healthy than consuming a large amount, according to a recent study. Get the details in the Cardiovascular section of our Extra Virgin Olive Oil Review, which includes our Top Picks among extra virgin olive oils.

5/10/2024

Eggs and Risk of Death

A recent study found that eating more than a certain number of eggs (a source of choline) daily carried an increased risk of death among people with a history of heart disease or stroke. Get the details in the Concerns and Cautions section of our Choline Supplements Review.

7/15/2024

Cocoa & Afib

Did high-flavanol cocoa supplementation impact the risk of developing atrial fibrillation, a heart rhythm disorder, in a major study? Find out in the Cardiovascular effects section of our Dark Chocolate and Cocoa Review, which includes our Top Picks among dark chocolates and cocoa powders, supplements and nibs.

3/26/2024

Black Cohosh Concern

Use of black cohosh (taken to reduce menopausal hot flashes) may have caused slowed heart rate, according to a recent report. Get the details in our Menopause Supplements Review.

3/29/2024

Microplastics Cardiovascular Concern

Microplastic particles were recently found in arterial plaque in many people, and this was associated with much higher risk of stroke, heart attack, and death. Get the details in the Microplastics section of our Water Filter Pitchers Review. Also see our Top Pick water filter pitcher for removing microplastics.

4/23/2024

Probiotics & Cholesterol

How might probiotics work to lower cholesterol? Find out what a recent study suggests in the Lowering cholesterol & apoB section of our Probiotics Supplements Review, which includes our Top Picks among probiotic supplements.

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

4/19/2024

How Olive Oil Lowers Cholesterol

A recent study suggested how substituting olive oil in place of saturated fats can reduce cholesterol. Get the details in the Cardiovascular Disease section of our Extra Virgin Olive Oil Review, which includes our Top Picks for olive oil.

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

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?

9/22/2023

Take Coconut Oil With Statins for Cholesterol?

Does taking coconut oil enhance, or diminish, the cholesterol-lowering effect of atorvastatin (Lipitor)? Find out what a recent study showed in our Coconut and Medium Chain Triglycerides (MCT) Oil Review, which includes our Top Picks among products.

Also see: Which supplements or foods can help lower cholesterol and keep my heart healthy?

9/01/2023

Arginine Safety?

Are there safety concerns with taking L-arginine? There are with high doses, capsules, and if you’ve had a heart attack. Learn more in the Concerns and Cautions section of our Arginine Supplements Review. Also see our Top Picks among arginine products.

12/22/2023

Vegan Collagen?

Find out if VeCollal, a vegan collagen alternative, actually contains collagen and if there is evidence that it reduces wrinkles. Also see our Top Pick collagen supplement for skin.

Also, learn whether adding collagen to coffee is likely to reduce the heart benefits of coffee.

12/01/2023

Probiotic for Lowering Cholesterol?

Does supplementing with probiotics help lower cholesterol? See the latest research in the Lowering cholesterol section of our Probiotics Supplements Review. Also see our Top Picks among probiotics.

Also see: Which supplements or foods can help lower cholesterol and keep my heart healthy?

1/19/2024

Pycnogenol for Hearts and Eyes?

We answered the following questions in our article about Pycnogenol and pine bark extracts:

• Does Pycnogenol help control coronary artery calcification?
• Is Pycnogenol beneficial for glaucoma?

1/27/2024

Licorice & Blood Pressure

Eating black licorice, or drinking tea that contains it, can increase blood pressure and cause heart issues. Get the latest details in our article about licorice.

2/06/2024

Vitamin K2 + D to Slow Calcification of Arteries?

Does taking vitamin K2 plus vitamin D slow the progression of coronary artery calcification? Find out what a recent study showed in the Heart disease section of our Vitamin K Supplements Review, which includes our Top Pick for vitamin K.

3/08/2024

Sweeteners and the Heart?

Is there a higher risk of atrial fibrillation in people who drink artificially sweetened beverages? Find out what a recent study found in our article about sugar substitutes.

3/12/2024

Low-Acid Coffee for Reflux?

Are “low-acid” coffees easier on the stomach or less likely to cause reflux than regular coffee? Find out now in our article about coffee.

Also find out how coffee affects:

• Heart attack risk
• Cholesterol levels
• Blood pressure
• Atrial fibrillation
• Dementia risk
• Cancer risk

2/23/2024

Heart Concern with High-Dose Niacin

New research suggests a negative effect of high-dose niacin, possibly explaining why it doesn’t reduce cardiovascular disease despite improving cholesterol levels. For details, see the Niacin section of our B Vitamins & Complexes Review, which includes our Top Picks among products.

3/01/2024

Heart Concern With High Protein?

Too much protein from a single meal might pose cardiovascular risk according to a preliminary study. For details, see the Concerns and Cautions section of our Protein Powders and Shakes Review, which includes our Top Picks among protein products.

2/21/2024

Big Benefits of Salt Substitute

A study among older people with high blood pressure showed that use of a salt substitute led to a dramatic reduction in heart attack and stroke. Get the details in the Salt Substitutes section of our Potassium Supplements Review, which includes information about popular salt substitutes on the market.

2/13/2024

Turmeric Instead of Salt

Adding certain spices, such as turmeric, can significantly reduce the amount of salt needed to add saltiness to food, according to a recent study. Get the details, and see our Top Pick among tested turmeric spices, in our Turmeric & Curcumin Review.

Also see: Do “lite” salts and salt substitutes containing potassium help lower blood pressure and reduce heart risks? Are they safe?