Adaptogen evidence brief
Ashwagandha is an adaptogenic herb sold for stress, sleep, testosterone, strength, and general resilience. The claims span several areas, so the evidence needs to be separated by outcome.
May improve some performance and stress/sleep-related outcomes, but sports-specific evidence is still developing.
RCT: +14.7% testosterone plus a second hormone-marker increase vs placebo; training transfer less certain.
Extract type and withanolide standardization matter; studies are not interchangeable.
A testosterone signal should be described as a biomarker finding, not automatic proof of hypertrophy or strength benefit.
Source Drawer
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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