After male puberty, a large amount of androgen is secreted in the body. Androgen testosterone makes the sebaceous glands of the human body secrete sebum vigorously, and keeps the hair papilla nutritious. The hair growth period is long, and the hair grows well; The young man has black hair and glowing face.
And there is a 5- α Reductase will change testosterone into dihydrotestosterone, which will make the hair papilla blood vessels shrink, the hair papilla shrink and become smaller, leading to hair loss. The course of the disease is slow. The hair loss begins at the two frontal corners, the front hairline gradually recedes, the forehead becomes higher, and the head is bald. This is androgenic hair loss, commonly known as "baldness", commonly known as "baldness". Too much pressure and excessive dieting will also accelerate the occurrence of baldness due to the lack of nutrition in hair.
From the perspective of human health, baldness has obvious physiological advantages:
1. Smart: As the saying goes, "grass does not grow on the busy street, and hair does not grow on the smart head". A large number of cases have proved that the vast majority of bald people are intelligent and have high IQ.
2. Not easy to suffer from osteoporosis: androgen can promote protein synthesis, muscle development, increase the total amount of bone matrix, make bones thicker, and promote the deposition of calcium in the body, so balding people are not easy to suffer from osteoporosis.
3. Not easy to suffer from cancer: Chinese medical research has confirmed that the amount of androgen in the human body is closely related to the incidence rate of cancer. For balding men, due to the strong secretion of male hormones and the high level of serum testosterone, they are not prone to cancer.
4. Longer life: Japan released a research result: the hormone content of 242 balding men aged 50 to 79 was observed and measured for 12 consecutive years. It was found that their hormone content was higher, and the death rate was 48% lower than that of non-balding men. The high hormone content is another characteristic of the high secretion of male hormone. It can be seen that the life span of balding men may be relatively longer.