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Articles and videos
Does a higher extract ratio mean a stronger supplement?22 extracts sold as Tongkat Ali were tested. Two met all four quality markers.
Beyond testosteroneEnergy, stress and strength shape how men feel. Where testosterone fits, and what the trials found.
Can women take Tongkat Ali?What changes in perimenopause and menopause, what helps, and what trials in women found.
Tongkat Ali and testosterone in men and womenWhat Tongkat Ali is, how it has been used, and what the research shows for men and for women.
Dr Shawn Talbott on stress, cortisol and testosteroneThe lead author of the 2013 stress study explains what changed in 63 moderately stressed adults.
Dr Andrew Huberman on Tongkat Ali and SHBGThe Stanford neuroscientist on free testosterone, SHBG and why people take Tongkat Ali.
Dr Rena Malik reviews the evidenceA urologist looks at the research on testosterone, erectile function and fertility.
Tongkat Ali, aromatase and estrogenHow Tongkat Ali may affect testosterone through aromatase and SHBG.