Myth-buster
A meta-analysis of astaxanthin for male infertility found no statistically significant improvement in sperm count — or any other semen parameter — across human trials.
This null result challenges the popular belief that astaxanthin boosts male fertility, but because this is among the first indexed meta-analyses on the topic, the evidence is still too thin to consider the question settled.
Researchers pooled data from human trials on astaxanthin and found it failed to improve sperm count, motility, viability, or morphology compared to placebo. While animal studies had suggested benefits, the human evidence so far does not support using astaxanthin for male infertility.
Where this fits in the evidence
This is among the first studies we've indexed on Astaxanthin for Improved Sperm Count — treat it as an early signal until more research accumulates.
The study
- Meta-Analysis
- 2026-02-19
- Scientific reports
This is a plain-language summary of a research finding, not medical advice. Pillser surfaces research signals to help you decide what's worth investigating — always consult a qualified professional before changing what you take.