Cordyceps — The Athletic Performance Mushroom
Cordyceps is a genus of parasitic fungi (primarily Cordyceps sinensis and Cordyceps militaris) used in traditional Tibetan and Chinese medicine. It is best known for improving athletic performance, oxygen utilisation, and energy production. Modern research focuses on its effects on VO2 max, mitochondrial function, and anti-aging properties via adenosine and cordycepin.
Mechanism of Action
Cordyceps increases ATP production by enhancing mitochondrial oxygen utilisation and upregulating adenosine receptors. Cordycepin (3'-deoxyadenosine) inhibits mTOR, activates AMPK, and has anti-inflammatory effects. Beta-glucans provide immunomodulatory activity. Cordyceps also increases testosterone production in animal models via StAR protein upregulation, though human evidence is limited.
Human Trial Evidence
A 2010 Journal of Alternative and Complementary Medicine RCT showed Cordyceps militaris (3 g/day) significantly improved VO2 max and ventilatory threshold in older adults over 12 weeks. A 2016 Journal of Dietary Supplements RCT confirmed improved aerobic capacity. Evidence for testosterone and anti-aging effects in humans is preliminary.
Dosing Protocol
1–3 g/day of Cordyceps militaris extract (standardised to 0.3% cordycepin). Cordyceps militaris is preferred over CS-4 (fermented Cordyceps sinensis) due to higher cordycepin content. Best taken 30–60 min before exercise or with meals. Cycle use is common (8 weeks on, 2 weeks off).
Safety & Contraindications
Generally well-tolerated. Mild GI effects possible. May interact with immunosuppressants (additive immunomodulation). Avoid in autoimmune conditions without medical supervision. May potentiate anticoagulants. Theoretical concern with hormone-sensitive conditions due to possible testosterone effects.