Black ginger (Kaempferia parviflora) has been traditionally used in Southeast Asian medicine for vitality and male sexual function, including support of the testosterone body system. Recent scientific studies have begun to investigate these traditional claims. Research, primarily in animal models and a handful of small human trials, suggests that extracts of black ginger may have a positive impact on testosterone levels and related functions.

For example, animal studies have shown that black ginger extract can increase serum testosterone levels, improve sperm quality, and enhance sexual behavior. These effects are thought to be due to the presence of polymethoxyflavones, which may stimulate the hypothalamic-pituitary-gonadal axis and promote steroidogenesis. In limited human research, some studies have reported improvements in physical fitness and erectile function, but evidence for direct increases in testosterone is weak and inconsistent.

Overall, while the use of black ginger for testosterone support has some promising preliminary data, especially from animal research, robust human clinical trials are lacking. Thus, the scientific evidence supporting black ginger’s use for testosterone enhancement is present but limited, justifying a modest evidence rating.