Carotenoids: benefits by goal, the dosage that worked, and the supplements ranked
What the 10 human studies of carotenoids we graded show for each goal, the dose that worked, and the products that hold it. This page is educational, not medical advice.
Carotenoids benefits, by goal: what the studies show
Members OnlyThe top 1 of 1 goals
| Goal | What the studies show | Studies | Dose that worked |
|---|---|---|---|
| Energy | Improved in studies 10 studies, 4 showed an improvement, 3 found none | 10 | 24 mg |
Carotenoids supplements, ranked by the human studies
Members OnlyThe top 2 of 2
Carotenoids dosage: how much per day
The dose that worked in the studies, and the upper limit
The studies taken by mouth that showed an improvement gave 24 mg a day.
The upper limit for adults is 3,000 mcg of carotenoids a day; above it, members see a note and are told they can take less.
Biohacker panel
Members OnlyWhat our 10 biohackers say about carotenoids
Dr. Mark Hyman, 9 Oct 2026: Mentions carotenoids, including astaxanthin and beta-carotene, as helping to reduce oxidative stress. Source
Siim Land, 5 Sep 2026: Carotenoids can protect your eyes against screentime and age-related decline in eye health. Source
Andrew Huberman, 20 Jul 2026: Notes that carotenoids, such as lutein, zeaxanthin, and astaxanthin (from seafood), have pretty good evidence for supporting cognitive function. Source
Dr. Rhonda Patrick, 11 Jun 2026: Notes that blood carotenoids, an objective marker of fruit and vegetable intake, correlated with lower GrimAge. Source
Thomas DeLauer, 27 Feb 2025: Notes that carotenoids are linked to a better life expectancy and lower risk of all-cause mortality, with high circulating levels reducing all-cause mortality by 31%. Source
Dr. Eric Berg, 18 Feb 2025: Explains that carotenoids are antioxidants that protect the eyes against blue light, chemicals, and damage from diabetes, but they decrease with age, reducing eye protection. Source
Questions people ask
Members OnlyAnswered from the figures on this page
What is carotenoids good for?
By the human studies we graded, carotenoids shows an improvement for energy.
Carotenoids for energy: what do the studies show?
In the human studies of carotenoids we graded for energy: 10 studies, 4 showed an improvement, 3 found none. The dose that worked: 24 mg a day.
How much carotenoids per day?
The studies taken by mouth that showed an improvement used 24 mg a day. The upper limit for adults is 3,000 mcg of carotenoids a day; above it, members see a note and are told they can take less.
When should I take carotenoids?
The label of the one carotenoids product we graded says to take it split into two or more doses a day.
Carotenoids side effects: is there an upper limit?
The upper limit for adults is 3,000 mcg of carotenoids a day; above it, members see a note and are told they can take less. The studies we graded report what happened at the doses that worked; this page gives no safety advice beyond the limit, and members have every product checked against their meds.
Can I take carotenoids with my meds?
Some supplements can change how meds work or are absorbed. Members have every product checked against the meds in their Health Profile before it joins their protocol.
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 →
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