Why don t men have bearded children?

Both animal and human hair have the effect of protecting the body and attracting conductivity. In terms of protection, it can keep warm or block the sun's rays. Special hairs can also protect the animal's neck from enemies, such as manes.

In terms of attracting the opposite sex, the male peacock uses the opening screen to show off its beautiful feathers to attract the female peacock. Human hair also has the function of attracting the opposite sex. Judging from the changes in human hair growth, babies are born with a layer of fluff on their bodies.

After a while, the fluff falls off and is replaced with soft bristles. At puberty, the soft hairs will transform into the first mature hairs. Hair development is controlled by the gonads.

Male hormones promote full beard and body hair growth, but inhibit hair growth. Estrogen promotes hair growth but inhibits beard growth. That's why girls don't grow beards. Men grow beards, which is the result of the action of male hormones.

The more vigorous the reproductive function, the faster the beard will grow. The blood vessels in the beard area are more distributed than the hair roots, and nutrients are easy to obtain, so the growth rate is also very fast. Androgen levels in healthy men are generally the same, but the amount of beard varies greatly from man to man.

Some people have thick beards, others have sparse beards; Some people have beards, some people have goatees, these are normal differences, and there is no real health significance.

This has something to do with hormones, men secrete mainly male hormones, and if they have beards, women secrete mainly estrogen, so they don't grow beards. If a woman is artificially given a drink or a male hormone, the woman will also grow a beard.

This is because beards are secreted by male hormones to a certain concentration before they grow, so bearded women do not, stunted adult men do not, and young boys do not.

Alas......The second sex characteristics are played by sex hormones, and the beard is promoted by male hormones, so the male beard grows, and the female body also contains a small amount of male hormones, so it is not that it is not long, but it is not clear to see, and there is actually a little bit of hair.

A beard is just a sexual characteristic of a man, just like the mane of a male teacher. A lush mane makes the male master look mighty and brave, and the image of the king of the steppe is about to come out. In fact, it is an outward manifestation of the secretion of male hormones, which are specially used to attract the opposite sex.

If a male mane is shaved off, almost no lioness wants to approach it. Men's beards are also caused by hormones.

Boys are affected by male hormones in their receptors and develop boys' sexual characteristics. Robust, brave, with long armpit hair and a long beard. Girls will become delicate and bright under the action of estrogen, and there will be a menstrual period, as well as the growth of armpit hair.

But it doesn't grow a beard. This is a matter of nature's creation, and we cannot interfere.

A beard is just a sexual characteristic of a man, just like the mane of a male teacher. A lush mane makes the male master look mighty and brave, and the image of the king of the steppe is about to come out. In fact, it is an outward manifestation of the secretion of male hormones, which are specially used to attract the opposite sex.

If a male mane is shaved off, almost no lioness wants to approach it. Men's beards are also caused by hormones. So that's why men have beards and women don't.

Post-pubertal males generally grow beards. Beards grow faster than hair, which is the result of the action of male hormones. The more vigorous the reproductive function, the faster the beard will grow.

The blood vessels in the beard area are more distributed than the hair roots, and nutrients are easy to obtain, so if you just shave off your beard, it will grow again in a few days.

Recently, foreign experts have found that beards have the property of adsorbing harmful substances. When people breathe, they can discharge a variety of harmful chemical gases, and they can all stay on the beard; The atmosphere contains a variety of heavy metal particles, especially in busy streets, polycyclic aromatic hydrocarbons and lead emitted from automobile exhaust will also be adsorbed by whiskers; Smokers, carcinogens such as benzopyrene in smoke, can also stay on their beards. In addition, the epidermis of a long beard secretes more oil, which is often difficult to remove when washing the face with water.

Studies have shown that greases have the property of adhesion to dust and microorganisms.

Foreign experts analyzed the shaved beard by gas chromatographs and found dozens of harmful substances, such as carbon dioxide, nitrogen oxides, benzopyrene and lead and other heavy metal elements. Under the microscope, a large number of microorganisms can also be seen on the beard. These harmful substances may be sucked back into the respiratory tract with the action of human respiration, endangering human health.

Therefore, people are advised not to grow beards.