The Maca root is a hardy cruciferous vegetable cultivated in an inhospitable region of the Andean Mountains at altitudes from approximately 12,500-14,500 feet. Native Peruvians have used Maca for several thousand years, as a medicinal food to enhance fertility, libido, to support healthy erectile function in men, and to alleviate PMS & menopausal symptoms in women. It was used by the warriors of the Inca King for energy and stamina. Maca is rich in essential minerals, especially selenium, calcium, magnesium, and iron, and includes fatty acids including linolenic, palmitic and oleic acids, and polysaccharides. Maca is an adaptogen, which means it helps the body adapt to stress, and promotes healthy hormonal balance. Because endocrine gland balance and immune system function are so interrelated, it often notably promotes a healthy immune system.