How can exercise during menstruation cause amenorrhea?

　　Ms. Li has been suffering from menstrual irregularities for the past six months, and recently she had irregular menstruation. amenorrhea . She was uneasy and worried about herself healthy Something went wrong. Ms. Li is a ballet dancer and has been participating in intense rehearsals and performances for the past six months. The menstrual disorder is probably caused by objective factors such as intense training, fast-paced life, especially the high excitement state during the performance stage, which caused endocrine disorders and caused temporary amenorrhea.

　　female After participating in excessive sports for a long time or intense competition, it may manifest as delayed menarche, menstrual disorders, or even amenorrhea, which is called exercise-induced amenorrhea. The incidence of amenorrhea in ballet dancers, swimmers, etc. can reach 60% to 80%, and the incidence of amenorrhea in long-distance runners can be as high as 90%.

　　Exercise amenorrhea is hypothalamic amenorrhea, which is a reaction of the body to strong external stimulation. Vigorous exercise is a kind of strong stress. Under the stress state, the body produces adrenocorticotropin-releasing hormone and activates sympathetic nerve system, stimulating the pituitary gland to secrete stress hormones. Adrenocorticotropin-releasing hormone inhibits the secretion of gonadotropin-releasing hormone from the hypothalamus, leading to a decrease in gonadotropin secretion and causing amenorrhea.

　　In fact, exercise-induced amenorrhea is not only related to excessive exercise, but also related to body fat content. Nowadays, many girls lose weight blindly. The thinner they are, the less skinny they feel. Exercise-induced amenorrhea may occur due to weight loss, reduced body fat content, and insufficient protein content in the diet. Generally speaking, amenorrhea will occur when the body weight is reduced by 10% to 15% and the body fat content is lost by 30%.

　　So, how much exercise can cause amenorrhea? This question cannot be generalized and is related to the basic conditions of the individual. When the amount of exercise is reduced, the stress on the human body gradually reduces or disappears, and the menstrual cycle can gradually resume. Therefore, treatment is not necessary when there are no symptoms. Once symptoms of discomfort appear, and the tension has been relieved and menstruation does not occur, active treatment should be initiated.