Synopsis

Source of validity: Scientific
Rating (out of 5): 4

Astaxanthin is a carotenoid pigment found in microalgae, yeast, salmon, trout, krill, shrimp, and crayfish. Its use for supporting and treating free radical damage is primarily justified by scientific evidence. Astaxanthin exhibits strong antioxidant properties, as demonstrated in numerous in vitro and in vivo studies. It neutralizes free radicals and reactive oxygen species (ROS), thereby protecting cells, lipids, and DNA from oxidative stress.

Several peer-reviewed studies have shown that astaxanthin is significantly more potent as an antioxidant than other carotenoids, such as beta-carotene and lutein, as well as vitamin E. For example, research published in Marine Drugs (2011) highlighted astaxanthin’s ability to scavenge singlet oxygen and inhibit lipid peroxidation, both key contributors to free radical damage.

Human clinical trials, though fewer, also support its effectiveness. A randomized, double-blind, placebo-controlled trial published in Journal of Clinical Biochemistry and Nutrition (2018) showed that daily supplementation with astaxanthin reduced markers of oxidative stress in healthy volunteers. Additional studies suggest benefits for skin health, eye health, and neuroprotection, all linked to its antioxidant capacity.

While more large-scale clinical trials are needed to fully confirm therapeutic effects, the current evidence base justifies the use of astaxanthin for supporting the body’s defense against free radical damage.

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