Lepidium meyenii

For approximately 2000 years Maca has been an important traditional food and medicinal plant in its limited growing region. It is regarded as a highly nutritious food and as a medicine that enhances strength and endurance and also acts as an aphrodisiac. During Spanish colonization Maca was used as currency.

From Wikipedia, the free encyclopedia

Health effects

Small-scale clinical trials performed in men have shown that maca extracts can heighten libido and improve semen quality, though no studies have been performed on men with sexual dysfunction or infertility. Maca does not affect sex hormone levels in humans, and has not been shown to act on hormones directly. It has been presumed that maca's hormone-normalizing effects may be due to the root's unique nutritional profile, which provides optimum levels of nutrients utilized by the body's endocrine system. In addition, maca has been shown to increase mating behavior in male mice and rats.