[Young female athletes and high-level sport].

YOUNG FEMALE ATHLETES AND HIGH LEVEL SPORT. The impact of intensive sport on the menstrual cycle varies according to the individual and the nutritional balance in relation to energy expenditure; impaired reproductive function with menstrual disturbances is an indicator of the syndrome of relative energy deficiency in sport (REDs). Raising the awareness of the female elite athlete, her sport environment, her family and the health professionals in charge of medical care enables better prevention and avoids harmful consequences on bone metabolism, reduced immunity and cardiovascular risk, among others, and the impact on endurance and resistance performance. The absence of a menstrual cycle, apart from hormonal contraception, is incompatible with the research of sport performance. Similarly, moderate to severe dysmenorrhea, heavy menstrual periods which are a source of iron-deficiency anemia, and premenstrual syndrome which interferes with training, should not be treated as a fatality or taboo subject, but should be managed by appropriate treatment and explained to the athlete to ensure care compliance.