Beta-carotene: what the studies show, and the products
40 of the human studies we graded used beta-carotene, and 10 showed an improvement. Its products are graded on the studies of every form of vitamin a. This page is educational, not medical advice.
What it does, by goalMembersThe top 5 of 13 goals
| Goal | What the studies show | Studies | Dose that worked |
|---|---|---|---|
| Improved in studies 6 studies, 2 showed an improvement, 2 found none, 1 pooled analysis | 6 | – | |
| Improved in studies 3 studies, 2 showed an improvement, 1 found none | 3 | – | |
| Improved in studies 3 studies, 1 showed an improvement | 3 | – | |
| Improved in studies 2 studies, 1 showed an improvement, 1 found none | 2 | – | |
| Too few studies 3 studies, 2 showed an improvement, 1 found none | 3 | – | |
| Too few studies 2 studies, no clear result yet, 2 pooled analyses | 2 | – | |
| Too few studies 1 study, no clear result | 1 | – | |
| Too few studies 1 study, no clear result | 1 | – | |
| No effect in studies 6 studies, 2 showed an improvement, 2 found none, 2 pooled analyses | 6 | – | |
| No effect in studies 5 studies, 1 showed an improvement, 1 found none, 1 pooled analysis | 5 | – | |
| No effect in studies 3 studies, 1 showed an improvement, 1 found none, 3 pooled analyses | 3 | – | |
| No effect in studies 6 studies, 3 found none, 2 pooled analyses | 6 | – | |
| No effect in studies 1 study, it found no effect | 1 | – |
Members see which goal each result is for, and the products for it. Start My 7-Day Free Trial →
Products – highest ranked firstMembersThe top 3 of 5
Dose and safetyThe dose that worked and the upper limit
No study we graded gave a dose that worked yet.
The upper limit for adults is 3,000 mcg of vitamin a a day; above it, members see a note and are told they can take less.
Biohacker panelMembersWhat our 10 biohackers say about beta-carotene
Members see which forms the panel backs, and what each biohacker said. Start My 7-Day Free Trial →
Questions people askMembersAnswered from the figures on this page
What is beta-carotene good for?
Answer for members.
Can I take beta-carotene with my meds?
Answer for members.
Members see the answers, checked against their own meds and goals. Start My 7-Day Free Trial →
Educational, not medical advice. Figures come from the human studies on PubMed we have graded; a study counts for a form when it names the form it used. Updated as new studies arrive. How we grade →