People who are too thin should increase their body fat. This is a suggestion for people who are too thin. Like excessive exercise, women who are too thin can delay puberty or the age of menstruation. In severe cases, they may even stop menstruating at all. In order for the functions of the body to work efficiently, a small amount of fat should also be maintained. Teenage girls should maintain a certain amount of body fat for normal development. Low body fat in women can lead to long menstrual intervals, light menstrual flow, and even amenorrhea.
The hypothalamus is the center that controls reproduction and receives information from other sensors in the brain. External factors such as stress, temperature, nutrition, and physical exertion can all affect the hypothalamus. If there is too little body fat and too much exercise, the hypothalamus cannot release or cannot release enough gonadotropin-releasing hormone normally, which in turn affects the normal release of other very important fertility hormones. Both men and women are affected by this. Gonadotropins, produced in the hypothalamus of the brain, control the production and release of follicle-stimulating hormone and luteinizing hormone, which in turn stimulate the uterus and testicles.
In ancient times, the hypothalamus of our female ancestors may have evolved to such an extent that only when the female body had accumulated enough fat and calories to conceive a fetus and meet the needs of lactation , to give birth. If a thin woman becomes pregnant, she may have a miscarriage or even lose her life. This may be the process of natural selection, and the result is that today\’s women have more fat than men – the normal fat content in women is about a quarter of their body weight.
It is difficult for extremely thin women to have children. Female athletes who are unable to ovulate because they have too little body fat, or who are unable to get pregnant even if they are able to ovulate, even though their body mass index is normal. This is because most of their body tissues are muscles and their body shape indicators are normal, but their fat content is too little. The male body also needs fat to maintain normal testosterone levels and healthy sperm. Weight does not fully reflect the amount of fat in a person\’s body.
In addition, if the body shape index is lower than the normal value, even if you do not participate in strenuous exercise, the ovulation function will quietly terminate – menstruation may be normal, but there is no ovulation. According to research, infertility caused by this is relatively easy to recover from, simply by gaining weight and reducing exercise. In addition, excessive dieting can also cause a decrease in progesterone, delay the growth of follicles (the space where eggs live), and prevent the large release of luteinizing hormone that stimulates ovulation.
Women who are very thin and want to have children need to wait until their weight and fat return to normal shape before becoming pregnant. It is also difficult for women with low body mass index to save their fetuses. Women need to add enough fat to ensure that the fetus receives nutrition. For women, pregnancy can often be resolved once weight is restored.
It is also difficult for very thin men to have children. They may develop erectile dysfunction or experience a significant decrease in the amount of semen that transports and protects sperm. And their sperm vitality and survival rate are also lower.
For people who are too obese, the main thing is to reduce body fat. Excess fat in women may lead to long intervals between menstruation (more than 35 days), low menstrual flow, and even infertility. Being overweight can cause certain hormone indicators to exceed normal values, thereby affecting the normal progress of ovulation. For women who are overweight, the probability of pregnancy is greatly reduced.
What impact will excess fat in women have on hormone changes? So far, it has not been fully understood. If obese women lose only 7 kilograms of weight, their hormone levels will recover and their menstrual cycles will return to normal. In order to maintain normal menstrual cycles, many women must control their body shape indicators within an appropriate range. Just as underweight people can resume ovulation after gaining weight, losing weight can also have a very obvious effect.
This article is provided by Baidu Reading and is excerpted from \”The Clear \”Conception\” Plan\” Author: Sun Jianqiu and Xie Yingbiao