The mystery of the human body, why do men have breasts and nipples?

KOMPAS.com – One of the oldest questions that has existed for hundreds of years is: why do men also have bads and bad?

Anthropologists have answered this question for hundreds of years. According to them, the bads belonging to men and women have developed since the fetus has no bad.

Maybe there will be many men who hate reading this, at first, the fetus of all humans is a woman.

Read also: The mystery of the human body, The reasons for the left bads to be bigger than the right

Proclaimed live Science, (06/06/2008), all human beings come from an embryonic cell that then quickly developed into different parts of the body.

At five weeks of gestation, the embryo is the size of an orange seed and a neural tube is formed. The neural tube is the place of the brain and spinal cord that eventually becomes the spine.

Then, at six weeks of gestation, the lines of the eyes, arms, legs and face begin to form. At that time, the fetus also started taking biological material for its bad.

If the fetus has a Y chromosome, testosterone will turn the buds of the bad organs into testes. Then the testicles will pump more testosterone and the penis will appear.

Meanwhile, female fetuses are not affected by testosterone, so they continue to use master plan beforehand, you need an ovary and a bad.

But curiously, before testosterone works, every embryo already has bads and bad. Thus, the white and the bad are the first to pbad before the cells develop into male organs.

In other words, men have bads and bad because they already have them before they become men.

But why did not humans evolve to erase the feminine features that seemed useless, like men's bads and bad?

Read also: Mystery of the human body, Why is the left side of the face better for selfies?

Evolution does not just remove unnecessary physical parts. The parties must be heavy or stay on their way to become an evolving concern.

Because men with bads are not harmful, evolution does not seem to erase them.

Human evolution does not seem to want to make human beings perfect beings. In addition to men who have bads and bad, women also have fine hair, characteristic of men.

Every human being is basically a living being made up of parts of the body that are good, bad, and unimportant.

For the record, although bad tissue in men is limited, men can still develop bad cancer.

The number of men with bad cancer is much smaller than that of women, accounting for at least 1% of all bad cancer patients.

Among the risk factors badociated with bad cancer cases in men include estrogen levels, obesity, liver disease and alcohol consumption.