SEARCH RESULTS for "Selenium"

Selenium Supplements Reviewed by

Selenium Supplements Review

Learn what to look to find the best selenium supplement, which products passed or failed our tests, and which selenium supplement is our top pick. Also learn about the association between selenium intake and the risk of lung, prostate, colon and ovarian cancer. Plus, get information about dosage, safety, side effects, and potential drug interactions in our report.

Other Related Product Reviews Found:
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1.Vitamin E Supplements Review  *
2.Multivitamin and Multimineral Supplements Review  *
3.Meal Replacement & Weight Management Powders and Shakes Review  *
4.Protein Powders, Shakes, and Drinks Review  *
5.NAC (N-Acetyl Cysteine) Supplements Review  *
6.Recommended Daily Intakes and Upper Limits for Vitamins and Minerals |
7.Greens and Whole Food Powders and Capsules  *
8.Zinc Supplements and Lozenges Review  *
9.Prostate Supplements Review (Saw Palmetto and Beta-Sitosterol)
10.Lycopene Supplements Review  *
11.Green Tea Review: Supplements, Brewable, Matcha, and Bottled  *
12.Mangosteen Juice and Supplements Review Article  *
13.Taurine Supplements Review for People, Dogs, and Cats  *
14.Fish Oil and Omega-3 and -7 Supplements Review (Including Krill, Algae, Calamari, and Sea Buckthorn)  *
15.Menopause Supplements Review (Soy and Red Clover Isoflavones, Black Cohosh) and Progesterone Creams  *

Encyclopedia Articles Found: (Articles do not mention brands)
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2.Functional Foods Index
3.Cancer Prevention (Reducing the Risk)
7.Cod Liver Oil
... More Results Answers to Questions Found:
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1.Now that it was shown that Ginkgo biloba is not an effective memory enhancer, are there any other health enhancing benefits from taking it, and, if so, what dose should one take daily?  (in Comments)
2.Can supplements with antioxidants like beta-carotene and vitamins A and E cause you to die sooner?
3.What are natural remedies for coronavirus (COVID-19)? Do supplements like zinc, vitamin C, or herbals work?
4.Is it true that some vitamins or supplements can cause cancer?
5.Are supplements with amino acid chelated minerals better than those with other forms of minerals?
6.Which supplements help reduce the risk of colorectal cancer?
7.How do the Beyond Burger, the Impossible Burger, and a beef burger compare in terms of vitamins and minerals, and which is best?
8.Do any supplements reduce side of effects of chemotherapy?
9.Someone told me that one Brazil nut can provide your entire recommended daily intake for vitamin E. Is that true?
10.Which supplements can help with arthritis?
11.Do any supplements help for ulcerative colitis?
12.Do any supplements help for hair loss?
13.Do any supplements help prevent or improve cataracts?
14.Are there any supplements I should avoid when taking aspirin or ibuprofen?  (in Comments)
15.Do vitamin patches, such as for B12 or multivitamins, really work? How about those from PatchMD?
16.Does the FDA approve laboratories that test supplements?
17.What is EpiCor? Does it really "boost" the immune system and prevent colds?
18.Which supplements are important after bariatric surgery (i.e., weight loss or stomach-reducing surgery)? Are there any I should avoid?

Clinical Updates Found:
2020 Selenium & COVID-19 (07/18/2020)
Selenium & COVID-19
Selenium-deficient people were more likely to die from COVID-19 than those who were not deficient according to a recent study. For details, see the What It Does section of the Selenium Supplements Review. Also see our Top Pick for selenium.
2018 Risk With Too Much Selenium (02/21/2018)
Risk With Too Much Selenium
Taking too much selenium was found to increase the risk of death in a newly published study. How much is too much? Get the details in the Concerns and Cautions section of the Selenium Supplements Review.
2017 Vitamin E/Selenium & Alzheimer's (03/29/2017)
Vitamin E/Selenium & Alzheimer's
A long-term study among men in the U.S. found that giving high doses of vitamin E and/or selenium did not significantly affect their risk of developing dementia. The study was part of a larger study which found that these supplements increased the risk of prostate cancer, type 2 diabetes, hair loss, and dermatitis. For details, see the "Alzheimer's disease/dementia" section of the Selenium Supplements Review >>
 Selenium and Ovarian Cancer (02/18/2017)
Selenium and Ovarian Cancer
A recent study found that women with the highest intakes of selenium from supplements had a much lower risk of ovarian cancer than those not getting selenium from supplements. Get the details in the "What It Does" section of the Selenium Supplements Review (which includes our tests of products) >>
2015 Selenium and Prostate Cancer (03/01/2015)
Selenium and Prostate Cancer
A new study suggests that men who have prostate cancer should not take supplements providing high-dose selenium. Earlier research has similarly advised against high-dose selenium for people with already adequate selenium intake. For details and more about selenium, see the Selenium Supplements Review >> 
2014 Can Vitamin E and/or Selenium Help Prevent Cataracts? (09/19/2014)
Can Vitamin E and/or Selenium Help Prevent Cataracts?
A study in older men in the U.S. found that taking large daily doses of vitamin E and/or selenium did not significantly reduce the risk of developing cataracts. But could the dose have been too high to be helpful? Other research has shown that "less is more" when it comes to antioxidant supplementation for cataracts. For more information, see the updates to the Vitamin E Supplements Review and the Selenium Supplements Review >> 
 Vitamin E, Selenium Can Increase Cancer Risk (02/27/2014)
Vitamin E, Selenium Can Increase Cancer Risk
In some men, taking high doses of vitamin E or selenium may double the risk of developing high-grade prostate cancer, according to a recent analysis. For details, including the dose, see the updates to the Vitamin E Supplements Review >> and the Selenium Supplements Review >>   
2013 Antioxidants: Too Much of a Good Thing? (08/25/2013)
Antioxidants: Too Much of a Good Thing?
A new, long-term study of Americans found the risk of dying over the course of the study (about 14 years) was lowest when antioxidant levels in the blood were above the lowest levels (the bottom 20% of the population). However, for people in the top 20% of blood levels for vitamins A and E, the risk of death increased compared to people with moderate levels. For selenium and beta-carotene, there was no significant difference in the death rate between moderate and high levels, although for vitamin C some additional benefit was seen at high, but not the highest, levels.
The results suggest that antioxidant supplements may be useful for those who are nutritionally deficient, but, as noted by the researchers, "beyond a certain threshold, higher levels do not lead to additional benefit, and may potentially be toxic." More details (including specific serum levels) are found in the linked updates to the following reviews, which include our test results and quality ratings of products:
2012 When Not to Take Selenium (03/11/2012)
When Not to Take Selenium
A researcher has advised not to take selenium if your selenium level is already adequate. Supplementation in people with adequate to high serum levels of selenium may increase the likelihood of developing type 2 diabetes. For details, see the update to the Concerns and Cautions section of the Cancer Supplements ReviewMore >>

Recent Recalls and Warnings Found:
1.Seller of Vitamin and CBD "NoronaPak" Warned for Coronavirus Claims (05/26/2020)
2.Seller of Vitamin D, MSM, Selenium & More Warned for Drug Claims (04/17/2020)
3.Brain Supplement Claims to Treat Brain Injuries, Alzheimer's Are Deceptive, Says FTC (11/02/2019)
4.Maker of Vitamin B12 and Multimineral Supplements Warned by FDA (07/18/2018)
5.Warning to D-Limonene, Vitamin C Seller (02/10/2018)

Archived Recalls and Warnings Found:
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1.FDA Warns Dr. Carolyn Dean of Drug Claims Made for Magnesium, Calcium & Other Mineral Supplements (07/11/2017)
2.Maker of Multivitamin and Fish Oil Warned for Manufacturing Violations (09/05/2015)
3.Seller of Antioxidant Water, Energy Drops Warned for Manufacturing Violations and Drug Claims (02/24/2015)
4.Seller of Heart, Brain and Diabetes Supplements Warned for Drug Claims (02/24/2015)
5.Maker of Ginseng, Zinc, Calcium and More Warned for Manufacturing Violations (12/05/2014)
6.Maker of Children's Vitamins, Weight Loss Supplements and More Warned for Manufacturing Violations (11/11/2014)
7.Seller of Prostate, Heart Supplements and More Warned for Drug Claims (11/06/2014)
8.Seller of Multivitamin Warned for Drug Claims (10/10/2014)
9.Maker of Mood, Smoking Cessation Supplements and More Warned for Violations, Drug Claims (05/14/2014)
10.Immune Supplement Recalled Due To Undeclared Milk (08/27/2013)
11.Fat Loss and Muscle Enhancement Supplements Found To Contain DMAA (08/01/2013)
12.Beware of Dietary Supplements With Claims To Treat Diabetes, FDA Warns (07/25/2013)
13.Joint Health Supplement Recalled for Undeclared Allergens (05/09/2013)
14.Maker of Omega-3, Saw Palmetto, St. John’s Wort Supplements And More Warned For Manufacturing Violations and Drug Claims (05/03/2013)
15.Seller of Digestion, Thyroid and Vitamin D Supplements Warned For Drug Claims (04/23/2013)
16.Probiotic Recalled Due To Undeclared Soy (03/21/2013)
17.Maker of Liquid Supplements Warned For Manufacturing Violations and Drug Claims (03/15/2013)
18.FDA and FTC Warn: Supplements Cannot Prevent, Treat Or Cure Cold And Flu (02/21/2013)
19.Manufacturer of Heart, Multivitamin, Cranberry, and Longevity Supplements Warned For Adulteration and Drug Claims (02/13/2013)
20.Consumers May Be Eligible For Cold, Allergy and Weight Loss Supplement Refunds (01/11/2013)
21.Seller of Blood Sugar, Depression and Sleep Supplements Warned For Making Drug Claims (12/26/2012)
22.Manufacturer of Prostate, Inflammation and Cholesterol Supplements Warned For Drug Claims (11/02/2012)
23.FDA Seizes Many Supplements from New York Company Due To Drug Claims (10/24/2012)
24.Maker of Eye Health Supplements Warned for Drug Claims (09/26/2012)
25.Supplement Company Warned For Medical Claims and Misbranding Of Omega-3, CoQ10, Noni Juice And More (08/30/2012)
26.Makers of Mineral Water Containing Lithium Warned (08/09/2012)
27.Seller of Cancer Cures Warned by FDA (03/03/2012)
28.Possible Risk Rather than Benefit Found in Trial of Vitamin E and Selenium for Prostate Cancer (10/30/2008)
29.Airborne to Pay $30 Million for Deceptive Advertising of Cold Remedy -- Refunds Available (08/14/2008)
30.Selenium Toxicity from a Supplement (06/03/2008)
31.Update: Hazardous Levels of Selenium Confirmed by FDA in Two Supplements (04/11/2008)
32.FDA Warns of Adverse Reactions with Two Liquid Supplements -- Selenium Toxicity Possible (03/28/2008)

News Releases Found:
2019 Best Selenium Supplements Identified by ConsumerLab (07/10/2019)
2012 tests selenium supplements -- Finds one with less than 25% of listed amount (08/31/2012) reviews prostate supplements with saw palmetto and/or beta-sitosterol and finds few likely to be effective (04/26/2012)
2009 40% of Green Tea and Selenium Products Fail Review of Cancer-Prevention Supplements; Lycopene Supplements Pass (04/28/2009) Warns of Problems with Multivitamins and Vitamin Water -- Defects Found in Over 30% of Supplements Selected for Testing; Several Popular Children's Multis Exceed Tolerable Limits (03/31/2009)
2006 tests cancer-prevention supplements; several contaminated with lead or low in ingredient
— Report available for green tea, selenium, and lycopene supplements
(04/26/2006) reports on 29 popular melatonin sleep supplements (03/29/2006) reports on supplements for bone health containing calcium and vitamin D— Results posted for 32 supplements for adults and children; One found contaminated with lead (03/13/2006)
 Sexual enhancement supplements analyzed by (01/25/2006)


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