Tongkat ali dramatically boosts testosterone in every man
Partially trueThe Claim
Tongkat ali is marketed as a powerful natural testosterone booster that works for any man, including young, healthy athletes.
Origin
Traditional Southeast Asian use as a male tonic combined with fitness-industry and social-media marketing.
What Science Says
A 2022 meta-analysis of 5 RCTs found a significant increase in total testosterone with Eurycoma longifolia (SMD 1.35), with the effect confirmed mainly in men with hypogonadism; the authors noted more research is needed before clinical use. Trials are small and short, so a meaningful rise in men with normal testosterone is less certain.
Verdict
Partially True