Mushrooms have a long history of use for medicinal purposes in traditional Chinese medicine. One such fungus, cordyceps, has long been prized as a tonic purported to increase strength, endurance, mental acuity and physical energy. It naturally grows on caterpillar larvae but is now specially cultivated to produce supplements.
Energy and Physical Peformance
Cordyceps is probably best known for its ability to improve physical stamina, energy and endurance, making it a popular supplement for athletes. WebMD notes that research has shown positive results for increasing exercise capacity and endurance in elite athletes and older adults who exercise. A study presented at the 2004 Experimental Biology Conference was the first to look at the effects of this supplement in sedentary adults. Compared to the placebo group, those using a cordyceps supplement experienced an increase in oxygen uptake during exercise, improved endurance and even experienced a small reduction in body weight. Alternative medicine expert Dr. Andrew Weil also recommends it for combating general fatigue and weakness.
Other Purported Uses
Its general strengthening properties have also made cordyceps popular for improving cognitive function, increasing sexual performance and promoting longevity. Memorial Sloan Kettering Cancer Center notes this mushroom has a history as a treatment for bronchitis and other breathing disorders and indicates research supports these suggested uses. It also has been recommended as a treatment for cough, hepatitis and high cholesterol and for strengthening the immune system. MSKCC reports cordyceps stimulates the production of a variety of immune system cells such as T-helper cells and natural killer cells and has exhibited anti-tumor activity.
Suggested Usage
Weil recommends taking one to two capsules daily for improved athletic performance, sexual enhancement or fatigue. For general health, he recommends one or two capsules weekly. The supplement should not be given to children.
Considerations for Use
No known interactions exist between cordyceps and other supplements or drugs. MSKCC reports cordyceps has demonstrated blood-sugar lowering properties; therefore, taking it at the same time as insulin or other drugs to lower blood sugar could cause hypoglycemia. Animal studies indicate cordyceps stimulates the production of testosterone, making it potentially problematic if you have prostate cancer or an increased risk for this type of cancer.
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