Outcome
    Limited

    Astaxanthin for Reduced Oxidative Stress

    Astaxanthin reduces oxidative markers in small studies but lacks clinical outcome evidence.

    Overview

    Astaxanthin reduces oxidative markers in small studies but lacks clinical outcome evidence.

    Verdict

    Insufficient evidence

    How It Works

    A carotenoid that spans the cell membrane and quenches singlet oxygen without becoming pro-oxidant.

    Dosing & Protocol

    Typical dose

    Recommended dose
    4-12mg/day with dietary fat
    Expected timeframe
    8-12 weeks

    Protocol

    note
    Absorption is minimal without dietary fat, which is the commonest reason people see nothing
    studied dose
    4-12 mg/day with dietary fat over 8-12 weeks
    evidence note
    Verdict is insufficient - biomarker change without any hard outcome data
    what happened
    Lipid peroxidation markers fell and there were modest skin and eye-fatigue benefits, but no trial has shown that lowering these markers reduces disease, events or mortality
    if you still trial it
    4-12 mg/day with a fat-containing meal for 12 weeks, with malondialdehyde or total antioxidant capacity measured before and after so you are not guessing

    Evidence

    What the studies say

    Small trials show reduced lipid peroxidation markers and modest skin and eye-fatigue benefits. No hard outcome data exists.

    Effects of astaxanthin supplementation on oxidative stress: a systematic review and meta-analysis of randomized controlled trials

    Score: 7/10
    2020
    meta_analysis
    n=421

    Wu D, Xu H, Chen J +1 more

    Astaxanthin supplementation significantly increased superoxide dismutase and total antioxidant capacity and reduced malondialdehyde.

    View source

    Effects of Astaxanthin Supplementation on Oxidative Stress

    Score: 6/10
    2020
    meta_analysis

    Wu D, Xu H, Chen J +1 more

    This review suggested that the antioxidant effect of astaxanthin on humans is unclear

    View source

    Impact of astaxanthin supplementation on markers of cardiometabolic health and tactical performance among firefighters

    Score: 6/10
    2024
    crossover
    n=15

    Gonzalez DE, Dickerson BL, Johnson SE +12 more

    Four weeks of AX supplementation did not significantly affect fasting markers of oxidative stress

    View source

    Safety

    Caveats

    Generally well tolerated. Can tint skin slightly at high doses.

    Less likely to help if

    People with low baseline oxidative stress, smokers who continue smoking, and anyone dosing without fat.

    Medical Disclaimer

    The information provided on this website is for educational and informational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition or before starting any supplement regimen.

    Individual results may vary. The statements on this website have not been evaluated by the Food and Drug Administration. Products and information are not intended to diagnose, treat, cure, or prevent any disease.