Cordyceps Sinensis has been used for long in Traditional Chinese medicine and Tibetan medicine. Cordyceps has been used to treat several conditions, recently also cancers. Extracts from both mycelium and fruiting bodies of C. sinensis, C. militaris and other Cordyceps species showed significant anticancer activities by various mechanisms such as, modulating immune system and inducing cell apoptosis. Some polysaccharide components and cordycepin (3′-deoxyadenosine) have been isolated from C. sinensis and C. militaris, which acted as potent anticancer components.
Cordyceps sinensis has been used to protect the bone marrow and digestive systems of mice from whole body irradiation. An experiment noted Cordyceps sinensis may protect the liver from damage. An experiment with mice noted the mushroom may have an anti-depressant effect.