This article is excerpted from Qu Limin's Talking about Health from Head to Foot by Changjiang Literature and Art Publishing House. Chinese medicine believes that people's life span is closely related to the degree of dissipation in sexual life. One difference between humans and animals is that animals have a fixed estrus period, and they will estrus and mate in a fixed season; But people have no fixed estrus period, and they can estrus all year round. Irregular estrus time will lead to excessive dissipation of vitality and kidney essence, which is one of the reasons why ordinary animals can live to a long life, but people can't live to a long life. The nature of reproduction has a great influence on both humans and animals. When we watch Animal World, we often see that some animals will lose their lives after ovulation. There is a truth in this, that the individual lives of human beings and animals will die, but God has given a compensation, that is, through reproduction, life can continue to live forever. Chinese medicine believes that the door of life is the door of death, that is to say, the door of life is also the door of death. People are born because of sex, and they will die because of sex. Therefore, the first article of Huangdi Neijing, On Ancient Innocence, discusses human life with the decline of kidney essence. If people dissipate excessively, it will do great harm to human body. Seven women and eight men are very different from animals, and so are men and women who are human beings. There is a very important law mentioned in the ancient naive theory of Huangdi Neijing, which is called "seven women and eight men". Women with seven men and eight means that women's life rhythm is related to seven, and men's life rhythm is related to eight. Every seven years, women's physiology will change obviously; On the other hand, men experience physiological changes every eight years. Therefore, at these rhythm points, both men and women should pay attention to health preservation to cope with the changes that have taken place in the body. Huangdi Neijing says that women's teeth will become longer when they are seven years old, and men's teeth will become longer when they are eight years old. The last two words of the above sentence are obviously upside down. What does this change mean? We know that little boys and girls will change their teeth when they are seven or eight years old, and tooth change itself can also be regarded as a manifestation of renal function, because teeth are flowers of the kidney, which are dominated by kidney qi, while the length of hair is dominated by liver qi. Kidney governs storage, liver governs storage, and divergent hair growth. There is a very important reason for this: women converge first and then germinate; Men are born in the front and converge in the back. Because women converge first, their genitals are all in the body; Because a man has hair, his genitals all grow outside. It can be said that male diseases and gynecological diseases are the same treatment, but the genitals are outside, including. When a woman reaches the age of 27 14, she will "feel the earth and feel the pulse". Ren meridian takes the midline in front of human body, from perineum to human body. Ren pulse also governs blood, so Ren pulse governs fetus and female fertility. When a woman reaches the age of 14, her pulse is smooth and full of blood, and the Taichong pulse starting from perineum dominates Yang Qi, which is also related to human sexual characteristics. Pulse-rushing qi carries pulse blood, so they mainly develop human secondary sexual characteristics. For example, when a woman reaches the age of fourteen, she will menstruate and grow breasts; Men will have nocturnal emission or a bearded Adam's apple when they are 28 16 years old. All these images of secondary sexual characteristics appear. Some women will say, I haven't menstruated since I was only fourteen. How to calculate this? In the eyes of the ancients, even if a woman came to menstruation at the age of eighteen, her physiological age was equivalent to fourteen; If she menstruates at the age of ten, this year is equivalent to the physiological age of fourteen. As we mentioned earlier, in ancient times, people believed that women would menstruate at the age of 14. As long as a woman menstruates, it marks the beginning of maturity. At this time, you should put your hair on a plate to let the matchmaker know that the child is old enough to get engaged. But as far as marriage is concerned, you can't get married at fourteen. In ancient China, it was stipulated that "twenty women married and thirty men married". It still contains the concept of seven women and eight men. Because when a woman is 372 1 year-old, her kidney qi is general, "real teeth are born and grow extremely long", that is, her body begins to reach a peak state, which can last until 4728 years old, and the functions of kidney and liver also reach an extreme, at this time, her body is the most robust. Therefore, the ancients believed that a woman married at the age of 20 would be able to raise very strong children at the peak of her life. This is very reasonable, so it is best for women to have their first child before the age of 28, which is very beneficial to the health of both children and mothers. Women begin to age at 57 or 35. Traditional culture believes that women age faster than men, and Yangming pulse begins to decline at the age of 35. Yangming pulse refers to the stomach pulse, that is, the stomach qi begins to decline, because Yangming pulse takes the face and forehead, so women may have crow's feet on their faces, raised forehead lines and gaunt faces around the age of 35. When a woman is 6742 years old, there will be signs of the decline of the three yang pulses (Yangming pulse, Shaoyang pulse and Taiyang pulse). Yangming pulse belongs to forehead, shaoyang pulse belongs to both sides of head, and sun pulse belongs to back of head. Sanyang pulse failure means that the hair at the temples begins to turn gray, and white hair also appears on the forehead and back of the head. At this point, the woman's face is no longer rosy. When a woman reaches the age of 49, her pulse and blood begin to be scarce, which is equivalent to the arrival of menopause. At this time, the pulse is weak, and the pulse is equivalent to yang, so both yang and yin blood are deficiency. At this time, "the figure is not good, there are no children", that is, the figure is not so graceful and can't have children. Huangdi Neijing holds that the rhythm of a person's life is eight. At first, men were only one year later than women. Later, men were 8864 and women were 7749, with a difference of 15 years. Men also have menopause, 8864 years old. When men are 28 16 years old, sexual development begins. At the age of 3824, men's bones and muscles will be very strong, and the peak of life is from 3824 to 4832. At the age of 32, his body reached a peak and his spleen and kidney function began to strengthen, so traditional culture requires men to get married at the age of 30. Men began to show signs of aging at 5840, and women showed signs of aging at 5735. In real life, we just call this aging maturity. When a person is 6848, he will really show his old age, such as exhausted sun, gaunt face and gray hair. When a man is 7856 years old, he will be "liver-qi failing, exhausted and less refined". As we said before, the liver is the meridian around the genitals. If liver qi fails, men will lose their reproductive ability. Tendon refers to the elasticity of the human body, and genitals are also elastic. Men will have so-called impotence at the age of 56. Of course, there's no need to panic. It's not that I'm 55 years old and I'll be finished next year. As I said before, although you are 56 years old from birth to now, it is more important when your physiological age reaches 56. Men will lose their teeth at the age of 8864. Teeth refer to teeth, and hair refers to hair, because teeth are the flower of kidney, which is dominated by kidney qi. "Tooth hair is gone" means that the convergence and hair growth of the human body are gone, and teeth and hair begin to fall off. After sixty-four, it depends on how you used to keep fit. Since then, you have used up all your previous accumulation, and nothing new has grown.