Tongkat Ali is one of the most-searched testosterone boosters on the internet, and a small pilot study gives it some real human data. Twenty-five active adults aged 57-72 took 400 mg of extract daily for 5 weeks, and both total and free testosterone rose, along with handgrip strength. Women's free testosterone climbed too, apparently because SHBG dropped. But there was no placebo group, so this is promising rather than proof. Here is what the study found, what it can't tell you, and how to approach it sensibly.
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