The female athlete triad refers to the interrelationships among energy availability, menstrual function and bone mineral density which may have clinical manifestations including eating disorders, functional hypothalamic amenorrhea and osteoporosis. The potentially irreversible consequences of these clinical conditions emphasize the critical need for prevention, early diagnosis and treatment. Nutritionally correct food ensuring optimal energy balance is a premise to improve these conditions. Alternative treatment is oestrogen replacement therapy which can prevent progressive bone loss.