Cordyceps Mushroom: From Tibetan Highlands to Olympic Athletes
Cordyceps became internationally known when Chinese athletes credited it for their record-breaking performances at the 1993 World Championships. Here's the science behind the story.
In September 1993, Chinese women's track and field athletes shattered three world records at the Chinese National Games. Their coach, Ma Junren, credited their performance to a training regimen that included cordyceps mushroom.
The story made international headlines. Cordyceps became the subject of intense scientific scrutiny. Twenty years of research later, here's what we know.
Traditional Use in Tibet
Cordyceps (Ophiocordyceps sinensis) grows at high altitudes in the Tibetan Plateau, where it parasitizes ghost moth larvae. Tibetan herders noticed that yaks and other animals that grazed on cordyceps-infected grass seemed unusually vigorous and energetic.
Traditional Tibetan medicine has used cordyceps for centuries for fatigue, respiratory conditions, and sexual dysfunction. The traditional preparation involved simmering the dried fungus in yak milk.
The 1993 Controversy
The Chinese athletes' performances at the 1993 World Championships were so dramatic that many observers suspected performance-enhancing drugs. The athletes were tested and found clean.
Ma Junren's claim that cordyceps was responsible remains unverified — elite athletic performance is multifactorial, and the athletes' training program was also exceptional. But the story drove significant research interest.
What the Clinical Research Shows
2010 RCT (Chen et al.): 12 weeks of cordyceps supplementation in older adults significantly improved VO2 max (+7%) and ventilatory threshold compared to placebo. Published in the Journal of Alternative and Complementary Medicine.
2016 RCT (Hirsch et al.): 3 weeks of cordyceps militaris supplementation improved time-to-exhaustion on a cycling test and reduced oxygen consumption at submaximal workloads in healthy young adults. Published in the Journal of Dietary Supplements.
2020 meta-analysis: A systematic review of 6 RCTs found cordyceps supplementation consistently improved exercise performance metrics, with the strongest effects on VO2 max and time to exhaustion.
The Mechanism
Cordyceps improves athletic performance through two primary mechanisms:
1. Mitochondrial ATP synthesis: Cordycepin (the primary active compound) is structurally similar to adenosine and directly supports mitochondrial energy production. Cells produce more ATP from the same amount of oxygen.
2. Oxygen utilization efficiency: Cordyceps increases the efficiency of oxygen use in muscle tissue, delaying the onset of anaerobic metabolism and lactate accumulation.
Unlike caffeine (which stimulates the nervous system) or blood doping (which increases red blood cell count), cordyceps improves the fundamental efficiency of cellular energy production.
Cordyceps sinensis vs Cordyceps militaris
Wild-harvested Cordyceps sinensis (the Tibetan species) is extremely rare and expensive — a single kilogram can cost $20,000. Most supplements use Cordyceps militaris, a related species that can be cultivated.
Research suggests Cordyceps militaris has similar or superior cordycepin content to wild-harvested C. sinensis. The cultivated species is the practical choice for supplementation.
This article is for informational purposes only and does not constitute medical advice.
This article is for informational purposes only and does not constitute medical advice. These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease. Consult your physician before making any changes to your health regimen.