Some couples really want a boy when they are preparing to have a child after marriage, and some families think that a girl is better, but sometimes the child born after pregnancy is different from their ideas. In fact, when it comes to pregnancy and childbirth, the gender of the fetus is uncontrollable, so what determines the birth of a boy or a girl?

1. What is the decision to give birth to a boy or a girl?

1. Male chromosomes

In fact, men are the most important reason for giving birth to boys or girls. To be precise, it is the sex chromosomes of the male friend that determine the gender of the future child. Because the eggs of female friends all have the same identity, 22 chromosomes and a pair of sex chromosomes, the sex chromosome must be X. Although male sperm also has 22 chromosomes and a pair of sex chromosomes, the sex chromosome may be Y or X. Therefore, X-chromosome sperm and eggs will have a girl, and vice versa.

2. Age factor

The older the man, the more likely he is to wear a "little cotton jacket", because as he grows older, germ cells are more sensitive to sperm on the Y chromosome . Likewise, older women are more likely to get "little cotton-padded jackets." Alkaline secretion of the uterus reduces the chances of x chromosome year by year. But this is not absolute, why? As the saying goes, "old people", so don't say you must have a girl when you are old.

3. Related to physical labor

When women’s physical labor intensity is low, the chance of giving birth to a boy increases. When the intensity of physical labor is high, the chance of giving birth to a girl increases. Therefore, giving birth within a period of time after marriage, if the wife often cooks, will reduce the man's leading role in giving birth to boys and girls. Diet and physical exertion constantly change the ph value of the female body, affecting the pregnancy environment, and also affect the ph value of the male body, affecting the production of male sperm, so this is very important.

2. What to eat if you want to conceive a boy or a girl

1. Eat more foods rich in potassium and sodium. In fact, for female friends, if they want to have a boy, they can eat more foods rich in sodium and potassium, especially before pregnancy. For example, soda crackers, peaches and oranges, as well as fish and shrimp, can ensure that women have enough sodium and potassium. Secondly, female friends can also eat more cereals for breakfast, which will make it easier to conceive a boy. So, you can also eat more corn flakes and cereals.

2. In addition to sodium bicarbonate, natural soda water also contains a variety of trace elements and is a good drink. Is soda water alkaline? Soda water is an aqueous solution of sodium bicarbonate and contains a weak base. It can be sterilized and used externally in medicine. Drinking alcohol can neutralize the body's acid-base balance and change the acidic constitution. Soda water is an aqueous solution of sodium bicarbonate and contains a weak base. It can be sterilized and used externally in medicine. Drinking it can neutralize the acid-base balance of the human body and change the acidic constitution. Soda water is good for nourishing the stomach because it can neutralize gastric acid; if there is less gastric acid secretion, drinking soda water for a long time can also cause harm.