Supplement
Vitamin E
The antioxidant story that large trials killed.
Vitamin E is a fat-soluble antioxidant, most commonly sold as alpha-tocopherol. We grade Vitamin E C- on evidence and C for worth-it at about $5-10 per month.
Evidence
Worth it
Typical cost: $5-10/month
What it does
Vitamin E is a fat-soluble antioxidant, most commonly sold as alpha-tocopherol. It was one of the most popular supplements of the 1990s and 2000s on the theory that neutralizing free radicals would prevent cancer and heart disease. Large randomized trials tested that theory directly.
What the research says
Prevents prostate cancer
Evidence: weak. The SELECT trial (35,533 men) found vitamin E (400 IU/day) did not prevent prostate cancer and was associated with a 17 percent increased risk. The Physicians' Health Study II (14,641 men) found no effect on any cancer.
Reduces all-cause mortality
Evidence: weak. A meta-analysis of 19 trials (135,967 participants) found a dose-dependent relationship between vitamin E above 150 IU/day and increased all-cause mortality. A later meta-analysis of 57 RCTs found no mortality benefit at any dose.
Corrects deficiency
Evidence: strong. True vitamin E deficiency is rare but real, occurring mainly in fat-malabsorption disorders. Supplementation corrects deficiency effectively. This is the only evidence-backed use.
This is the textbook case of an antioxidant hypothesis demolished by large trials. SELECT is one of the biggest supplement trials ever run, and it found harm, not benefit. The grade stays above D only because deficiency correction is a real, evidence-backed use.
What the experts say
Every position links to its source. We include skeptics alongside supporters.
Peter Attia
Specific position on vitamin E supplementation not verified.
Is it worth it?
Evidence (C-) sits below the leaderboard floor, so the worth-it grade is capped at C+ however inexpensive it is. About $7.5 a month at a common dose. Derived from the October 2026 worth-it model.
Typical cost
$5-10/month
Common form, not a brand recommendation
Dosage contextestablished
The RDA is 15 mg/day (22 IU), easily met by diet. Trial doses of 400 IU/day were associated with harm signals. There is no evidence-backed supplementation dose for healthy people.
Safety notes
High doses (above 400 IU/day) were associated with increased prostate cancer risk in SELECT and increased all-cause mortality in meta-analysis. Can increase bleeding risk, especially combined with blood thinners. Get vitamin E from food (nuts, seeds, oils) instead.
Longevity Lab Report
Vitamin E news, graded when it happens.
The grade on this page stays free. The reporting goes further in the email: new studies, dose debates, and expert shifts on vitamin e, including stories that never get posted here.
Frequently asked questions
Is Vitamin E safe?
High doses (above 400 IU/day) were associated with increased prostate cancer risk in SELECT and increased all-cause mortality in meta-analysis. Can increase bleeding risk, especially combined with blood thinners. Get vitamin E from food (nuts, seeds, oils) instead.
What is the right dose of Vitamin E?
The RDA is 15 mg/day (22 IU), easily met by diet. Trial doses of 400 IU/day were associated with harm signals. There is no evidence-backed supplementation dose for healthy people.
Is Vitamin E worth taking?
We grade Vitamin E C for worth-it at a typical cost of $5-10 per month. Evidence (C-) sits below the leaderboard floor, so the worth-it grade is capped at C+ however inexpensive it is. About $7.5 a month at a common dose. Derived from the October 2026 worth-it model.
Changelog
Last updated 2026-10-17
- 2026-10-16|New DRAFT entry, batch 4.
- 2026-10-17|Worth-it grade derived from the October 2026 worth-it model (same gated model as the leaderboard); applicability recorded for all records.