Ashwagandha for Low Testosterone (Male Hypogonadism)

Ashwagandha produces modest increases in total testosterone in men in several small randomized trials, typically 10-15% and within the normal range. It is not a treatment for clinically diagnosed hypogonadism.

The proposed route runs through the stress axis. Chronically elevated cortisol suppresses gonadotropin-releasing hormone and, downstream, luteinising hormone and testicular testosterone production. By lowering cortisol, ashwagandha may partially release that suppression, which fits the observation that increases are largest in stressed or overtrained men. Trials have also reported increases in luteinising hormone and dehydroepiandrosterone, and improvements in sperm concentration and motility in men with infertility, alongside reduced markers of oxidative stress in seminal plasma.

Several randomized placebo-controlled trials have measured testosterone as an outcome. In resistance-training men taking 600 mg of KSM-66 daily for eight weeks, total testosterone rose meaningfully more than placebo alongside greater gains in strength and muscle size. In overweight men aged 40-70 with mild fatigue, 21-day supplementation increased DHEA-S substantially and testosterone modestly. Trials in men with infertility have reported improvements in sperm concentration, motility and testosterone. A systematic review of ashwagandha and male reproductive parameters concluded that the direction of effect is consistent but that sample sizes are small, populations differ widely, and the absolute changes in testosterone are modest — generally in the range of 10-15% from baseline, keeping men within the normal reference range rather than correcting a deficiency. No trial has established that ashwagandha treats clinical hypogonadism, and none should be read that way.

Men with primary or secondary hypogonadism from a structural or genetic cause, and men whose testosterone is already mid-normal, are unlikely to see clinically meaningful change.