Why hasn t menstruation been degraded by natural evolution?

Let's take a look at 360 encyclopedia first.

Explanation. <>

Every month or so, the endometrium undergoes spontaneous thickening, periodic changes in vascular hyperplasia, gland growth and secretion, and endometrial collapse and shedding accompanied by bleeding. “Renews the blood in the body and eliminate metabolic waste, which is one of the reasons why the average life expectancy of women is higher than that of men。The structure of human embryogenesis is similar to that of other mammals.

Not quite the same, the figure has been given above. People this way isThe embryo is the most closely bound to the uterus, which is closely connected to the endometrium, so the endometrium will be brought down during childbirth, which often causes severe pain and heavy bleeding。In other animals, the embryo is separated from the endometrium, and the whole embryo slips out of the uterus during delivery, like a hen, and the mother has nothing to do.

Evolutionism. It's not "use in and out".

"Retreat" is like this:

Natural. A change in an existing heritable biological trait that jeopardizes survival or reproductionThose who possess this trait are cut off from their grandchildren-- > population is left with only those that do not possess this trait to continue to reproduce -- this trait disappears in the entire population.

"Enter" is like this:

Natural random mutations produce a heritable trait --This trait is beneficial for the survival or reproduction of the creature--> The survival rate and reproduction rate of this organism are higher than those of other individuals in the population -- The number of organisms with this trait increases in its population -- This trait becomes a common trait of the population.

Do you think menstruation satisfies the above characteristics? So of course it won't be degraded.

And if we think about it, what does it mean to have no menstruation without a human woman? It means that the woman is no longer ovulating, which means that ......Person! Kind! Big! Extinguish! Lose! Yes!

The theory of evolution is not a matter of use, what is left is advantageous, and the average life expectancy of women is generally a few years longer than that of men, but the technological elite turns a blind eye. What causes it? Has modern science and medicine given a clear answer?

No. Females are physiologically different from males in the long process of evolution, and the purpose is to shoulder the reproductive role of the race. In order to avoid irreversible consequences, it is necessary to rehearse the process of the woman's fetus, and basically once a month, menstruation is the result of this rehearsal.

For women, menstruation is a controllable way to rehearse the body, in order to improve the body's timely and effective ability to resist damage and repair, and the ultimate goal is for human reproduction. Therefore, the Creator is very fair, and at the same time gave the great woman troublesome and inconvenient physiological phenomena and great mission, but also gave corresponding compensation, which is the extension of life expectancy for several years, and the formation of decades of menstruation and the process of several fetal births per capita, timely and effective The body's ability to resist damage and repair is the key to this.

Probably because there are more and more toxins in the environment of life, menstrual inner monologue: I'm here to detoxify you! Giving birth to a child is not the same as not being degraded, detoxifying and then repairing to make women's bodies better and better.