Why does deliberate diet control lead to amenorrhea?
The origin and regulation mechanism of menstruation is very complicated. Simply put, the regulation of menstruation is closely related to the hypothalamus in the female brain. The hypothalamus sends a "command" to the pituitary gland by releasing gonadotropin-releasing hormone (GnRH), and then the pituitary gland releases gonadotropin (Gn) to the ovary to regulate menstruation. This seemingly simple adjustment process, "behind the scenes" actually involves many "interests", and the work needs material support. The main components of these hormones themselves are sugar and protein. Long-term deliberate excessive dieting leads to insufficient nutrient intake in hypothalamus and pituitary gland and long-term overload operation. Gradually, the hypothalamus and pituitary gland appear functional atrophy, and the secretion of corresponding hormones gradually decreases, which is not enough to "instruct" the ovary to promote endometrial proliferation and shedding. If the endometrium does not thicken, menstruation will be gone, and amenorrhea will occur over time. We call it "dystrophic amenorrhea" in medicine.
What harm does dystrophic amenorrhea have?
Amenorrhea caused by deliberate dieting fundamentally "hurts" the hypothalamus, the highest nerve center of the human body. Although the hypothalamus is only the size of an almond, it plays an important role. In addition to regulating human reproductive hormones, hypothalamus is also responsible for the endocrine and metabolic processes of other organs of the human body. Hormones regulated by hypothalamus include thyroid hormone, growth hormone, vasopressin and insulin. Hypothalamic functional atrophy leads to the reduction of related hormone release, which can lead to hypothyroidism, neurothinking disorder, osteoporosis and so on. And further manifested as fear of cold, decreased immunity, dry skin, listlessness, low blood pressure, easy fracture, suicidal tendency, rebound bulimia and so on. There are even reports of death due to the decline of multiple organ functions in the whole body.
How does excessive exercise lead to amenorrhea?
In the first case, in addition to amenorrhea caused by deliberate dieting, the little girl's excessive exercise every week was also mentioned. Aerobic exercise is a good thing in itself, which can promote the metabolism of the body, but for girls, it is necessary to grasp the degree of exercise. Excessive exercise will not only make you curvy, but also act as the "culprit" to accelerate amenorrhea. Sports amenorrhea is very common among female athletes and dancers, and the amenorrhea rate is positively correlated with the weekly training time and intensity. Amenorrhea caused by excessive exercise is not exercise itself, but malnutrition caused by exercise. Menstrual function is related to weight, especially the fat/muscle ratio. Excessive exercise reduces the body fat/muscle ratio and increases the plasma catechol estrogen, which reduces the sensitivity of pituitary gland to gonadotropin-releasing hormone (GnRH) released by hypothalamus and causes amenorrhea. In addition, a large number of exercises will lead to hyperandrogenism, hyperprolactinemia and excessive prostaglandin secretion, which will directly inhibit the hypothalamic-pituitary-ovarian axis (H-P-O) and cause amenorrhea. We always ignore the suffering behind those female athletes in our motherland.
Beauty is of course important to women. The beauty of bones and curves is what countless girls yearn for, but the cost and pain of deliberately dieting and excessive exercise because of the pursuit of these somatosensory beauty are not worth the loss. Girls should not be carried away by these short-lived beauty. There is something wrong with the hypothalamus. How long can the beauty of curves last? ! Eat well, exercise properly, and let America stay! Health is the real beauty, neither fat nor thin is just right!
Girl 163cm, weighing 90 kg, slightly thin. But it is unscientific to simply look at height and weight, depending on body shape and body index. For example, many girls weighing 65,438+020 kg are very heavy, but they are all protruding and backward, with tight waists and quite hot and charming bodies. Many girls weighing less than 65,438+000 kg have flat hips, baggy waists and worship meat on their arms at the airport. That kind of girl has a good figure, as everyone knows. Now "no more than 100 good women" is out of date, and now it is said that "women weigh no more than 100 and are either flat-chested or short". From the health point of view, as long as the weight of girls is not overweight and the weight of girls is less than 163cm, it is not overweight to calculate the body mass index. However, even if you are not overweight, you should have a regular physical examination. After all, you can't judge whether you are healthy or not just by your figure. There are too many healthy fat people and unhealthy thin people.
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