The cordyceps fungus is considered one of the most potent adaptogenic herbs, having a particularly beneficial effect on the kidneys and lungs. Its ability to strengthen kidney energy in TCM has led to it being widely used in men’s health for problems such as impotence, low sperm count, and low libido. Because of its effects on the lungs, cordyceps benefits athletes by increasing oxygen uptake into red blood cells by the lungs, and it is rumoured to be widely used by members of the Chinese Olympic track team. A very balanced and safe substance, cordyceps improves endurance, strengthens the immune system, clears phlegm, and is considered invaluable in post-partum recovery or recovery from any serious illness. Modern research has shown it to have anticancer effects, as well as being effective in liver and kidney diseases, and high cholesterol. It has also shown antioxidant properties as well as immunomodulatory properties.