Cordyceps is a fungus whose fruiting body differs from the familiar cap-and-stem mushrooms most people recognize, but it is commonly classified as a medicinal mushroom because of its similar uses and bioactive compounds. For centuries, it has been used in traditional Chinese and Tibetan medicine and has recently gained popularity in the West for its wide-ranging health benefits. I've previously written about how cordycepin, one of the most well-studied compounds from cordyceps, may support energy and endurance by acting as an adenosine mimic (https://shorturl.at/dTroK). Here, we'll look at another area of growing interest: male reproductive health, libido, and prostate health. In one study, cordyceps out performed Viagra! Keep reading.
A study published in 2008 found that cordyceps mycelium significantly increased both sperm count and sperm motility in rats compared with untreated controls (https://pubmed.ncbi.nlm.nih.gov/19051352/). The researchers also observed higher circulating testosterone levels in the cordyceps-supplemented animals. Together, these findings suggest that cordyceps may support both sperm quality and testosterone production. Since testosterone plays a central role in male reproductive function and sexual desire, these results provide a possible biological explanation for the long-standing reputation of cordyceps as an aphrodisiac. Supporting this idea, another study found that cordyceps improved erectile function in diabetic rats, likely through a combination of increased testosterone production and reduced oxidative stress (https://pubmed.ncbi.nlm.nih.gov/33274209/; see figure below).
The figure above shows that normal controls (NC) had regular levels of serum testosterone (bar 1) while rats with diabetes mellitus (DM), which is known to lower testosterone had reduced levels (bar 2), and was used as the treatment group. Cordyceps (CCM) was given in increasing concentrations, and all groups show increases in testosterone (bars 3-5). These results were better than Sildenafil AKA Viagra (bar 6). Viagra was chosen here as a negative control because it is commonly used for erectile dysfunction, but does not affect testosterone.
More recent research continues to support these findings. In 2024, researchers demonstrated that cordyceps directly stimulated testosterone production by Leydig cells, the specialized cells within the testes responsible for synthesizing testosterone (https://pubmed.ncbi.nlm.nih.gov/38316217/). Testosterone is essential not only for