Why don t women grow beards Girls grow beards, normal? Why? How can it not be long?

The skin is too thick and the beard can't grow.

Because women don't have androgens.

Biology, after estrogen is secreted more than male hormones, it is the normal physiological characteristics of girls.

Both men and women contain estrogen and androgen in their bodies, and the reason why the characteristics are different depends mainly on which hormone is dominant. Beard growth is closely related to the so-called male hormones, so men with high levels of the body tend to have a pronounced beard. Beard growth in women is often caused by hormone imbalance, but it can also be caused by drugs, such as the use of delodontin, corticosteroids, psoralen or streptomycin.

This drug-induced hirsutism usually goes away after the drug is stopped.

Because of the estrogen imbalance in women.

Women also have male hormones in their bodies, especially women who are more prone to acne, and have more male hormones in their bodies.

When the content of estrogen is low, and it is not enough to suppress male hormones, women will have some male sexual characteristics. For example, with a long beard, body hair is relatively coarse, long, and hard. If a woman's estrogen fades away, then so do the woman's sex characteristics.

Therefore, it is necessary to take good care of the body and restore the balance of hormones, so that women will not grow beards.

Milk can't be drunk as water. Now whether it is domestic dairy products or foreign ones, it is not very reassuring...

Median line theorem of triangles The median line of a triangle is parallel to the third side and is equal to half of it.

82 The median line theorem of the trapezoid The median line of the trapezoid is parallel to the two bases and is equal to half of the sum of the two bases l=(a+b)2 s=lh

83 (1) Basic properties of proportions If a:b=c:d, then ad=bc

If ad=bc, then a:b=c:d wc s ?

84 (2) Proportional properties If a b = c d, then (ab) b = (cd) d

85 (3) Proportional properties If a b = c d = ...=m／n(b+d+…+n≠0), then.

a+c+…+m)／(b+d+…+n)=a／b

86 Proportionality Theorem for Parallel Lines Dividing Line Segments Three parallel lines cut two straight lines, and the resulting corresponding line segments are proportional.

87 Corollary A straight line parallel to one side of the triangle cuts off the other two sides (or extensions on both sides), and the resulting corresponding line segments are proportional.

88 Theorem If a straight line is proportional to the corresponding segments obtained by cutting off the two sides of a triangle (or an extension of both sides), then the line is parallel to the third side of the triangle.

89 A straight line that is parallel to one side of the triangle and intersects the other two sides, the three sides of the truncated triangle are proportional to the three sides of the original triangle.

Reasons why women don't grow beards:

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.

Joke story: Wife: "Hey, I heard that men are bald because they use their brains too much, is that right?" ”

Husband: "Yes! Women don't grow beards precisely because they chatter all day long and their jaws move excessively. ”

Beard is a secondary sexual condition in the human body and is controlled by the level of hormone secretion. Estrogen secretion levels in women are much higher than androgen levels. It will not grow a beard, but when the secretion of estrogen is insufficient, women will have a second sex disorder due to the increase in androgen content (long beard filial piety).

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 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.