This study says it doesn’t do much for men but it doesn’t cause harm. However, Web MD says that it might increase sexual desire in men.
Web MD says that there is not enough evidence to show whether Maca Root actually does anything for any of the following:
* “Tired blood” (anemia).
* Leukemia.
* Chronic fatigue syndrome (CFS).
* Improving energy and athletic performance.
* Improving memory.
* Depression.
* Female hormone imbalance.
* Menstrual problems.
* Infertility.
* Symptoms of menopause.
* Osteoporosis.
* Stomach cancer.
* Tuberculosis.
* Sexual problems.
* Boosting the immune system.
* AIDS.
However, Discovery Health says it works to boost libido, sexual function and overall energy because of the presence of novel compounds, the macamides and the macaenes. According to their article, to be consistent with Peruvian use you’d take a minimum of six to ten 500-milligram capsules of powdered maca daily, equal to 3,000 to 5,000 milligrams of maca.
Apparently no toxic level of maca has been found and it is consumed in Peru as a food. However, that doesn’t mean it works. Caveat emptor.