2.5/5
Weak
evidence
Adaptogen evidence brief
Maca
Physical-performance evidence is emerging but still too small and mixed to support broad gym or testosterone claims.
Headline Finding
Recent performance review and athlete trials are early; testosterone-booster reviews do not support hormone claims.
Dose Context
Forms, colors, and extracts differ across studies; do not treat generic maca powder as equivalent to studied preparations.
Important Caveat
Sexual-function or libido findings do not convert into testosterone, strength, or hypertrophy evidence.
Source Drawer
Linked Research
- Meta-analysis Physical performance meta-analysis
- Trial Elite athlete trial
- Systematic review Testosterone booster systematic review
- Systematic review Herbs/testosterone systematic review
- Full text Sportsmen pilot study PDF
How To Read This Rating
The score reflects evidence that the supplement does its stated job. Some jobs are direct, such as strength, endurance, or recovery; others are indirect, such as sleep, mood, appetite, or health support. A real effect can still receive a cautious practical rating when dose, safety, product quality, or audience fit remain uncertain.
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