Quick Navigation

Selenium

An Essential Mineral that is heralded for its anti-oxidant capabilities, it forms a part of some anti-oxidant enzymes such as glutathione to confer protective effects. Taking more than needed, however, can cause oxidative damage and may be pro-diabetic.

Our evidence-based analysis on selenium features 96 unique references to scientific papers.

Research analysis led by .
Reviewed by
Examine.com Team
Last Updated:

How to Take

Medical Disclaimer

Recommended dosage, active amounts, other details

An overall intake (foods and supplements) in the range of 200-300ug daily should be the goal for general health and well being with an emphasis on anti-carcinogenic properties.

Get the latest information on 400+ supplements and their effects on 600+ health conditions & outcomes.

By becoming an Examine Plus member, you'll have access to all of the latest nutrition research. Quickly and easily look up scientific research on over 400 supplements across over 600 different health goals, outcomes, conditions, and more.

Already a subscriber to any of our membership plans? Click here to login.

Human Effect Matrix

Unlocked for Examine Plus members

The Human Effect Matrix summarizes human studies to tell you what effects Selenium has on your body, how much evidence there is, and how strong these effects are.

Full details are available to Examine Plus members.
Grade Level of Evidence
Robust research conducted with repeated double-blind clinical trials
Multiple studies where at least two are double-blind and placebo controlled
Single double-blind study or multiple cohort studies
Uncontrolled or observational studies only
Level of Evidence
? The amount of high quality evidence. The more evidence, the more we can trust the results.
Outcome Magnitude of effect
? The direction and size of the supplement's impact on each outcome. Some supplements can have an increasing effect, others have a decreasing effect, and others have no effect.
Consistency of research results
? Scientific research does not always agree. HIGH or VERY HIGH means that most of the scientific research agrees.
Notes
grade-b Notable Very High See all 3 studies
Supplementation with selenium significantly reduces the incidence of pre-eclampsia.
grade-b Minor - See study
A small decrease in prostate cancer risk is seen when comparing areas with high soil selenium (indicative of dietary intake of selenium) against areas with low soil selenium.
grade-d Minor - See study
There seems to be a notable decrease in the total number of lesion counts after nearly two months of selenium supplementation in those suffering from acne vulgaris.

Become an Examine Plus member to access the latest nutrition research on over 400 supplements across over 600 different health goals, outcomes, conditions, and more.

Becoming an Examine Plus member not only unlocks the Human Effect Matrix for supplements, but also all health topics on Examine.com. We neatly summarize all the latest research so you can make the best decisions for your health based on what's accurate and not out-dated information.

Click here to see all 96 references.