It may be related to the following reasons:
1, which is related to the woman's physique-alkaline environment and acidic environment.
In general, male sperm with X chromosome tends to be more energetic in acidic environment, and then the chances of giving birth to girls are greater; Sperm with Y chromosome is more active in alkaline environment, so it is easier to have boys. Therefore, in life, there are often some pregnant women who will drink a proper amount of soda water or change the pH value of their bodies in other ways.
2, related to temperature-winter or low temperature environment.
It is found that low temperature will lead to the decrease of sperm activity containing Y chromosome, which makes it difficult for a baby boy to be born. Then the temperature of the environment in which men and women live one month before sex is an important factor affecting the baby's gender.
It has something to do with men's occupation-athletes or soldiers.
The study found that those professional athletes have the greatest chance of giving birth to girls! This is because they usually exercise a lot, and their muscles often produce a lot of lactic acid, which will lead to a lot of acidic substances deposition; Moreover, a professional athlete usually consumes more energy than the average person, and most of the energy is acidic, which makes the athlete's whole body acidic, so it is not easy to have boys. In addition, there are soldiers, physical men who love sports, and it is often difficult to have boys, so most of their children are daughters.
4, related to the frequency of sexual life-too little sperm.
Men who have high frequency of sexual life before pregnancy are not easy to have boys, because when they are pregnant, sperm are more likely to have boys, and sperm are less likely to have daughters; Only when more sperm are produced at one time, the vitality of sperm will be relatively improved.
5, related to smoking-male embryo injury.
Studies have found that it may be that sperm or male embryos carrying Y chromosomes are more vulnerable to smoke. Because both husband and wife don't smoke, the probability of having a boy is about 55%; However, if one or both husband and wife are heavily addicted to cigarettes, the probability of having a boy will be significantly reduced. The reason why this happens can be because the sperm with "X chromosome" has a big head and a short tail, moves slowly and is acid-resistant, so their sensitivity is low and they are not easy to be hurt; Sperm with "Y chromosome" has long tail and fast swimming speed, but it is very sensitive, so it has poor acid resistance and is vulnerable to injury.
6. It is related to the age of men-the older they are, the less likely they are to have boys.
Usually those young men who are in good health will have very energetic sperm and have a greater chance of giving birth to boys; The sperm count of men will decrease with age, so the older men are, the less likely they are to have boys.
7, related to the rich and the poor-"rich without adding Ding"
"Money without salary" is a folk proverb. In other words, it is usually difficult for rich people to have boys, but it is easy to have girls. What's the point? It may be said that in ancient times, only those rich people could eat a lot of foods with high protein, high fat and high heat energy, but these foods made the body and blood acidic, so it was not easy to have a boy!
Personally, I think it's only a matter of probability to have boys and girls. Every pregnancy, the probability of having a boy is 50%, and the probability of having a girl is 50%. As long as there are enough pregnancies, a boy will be born one day.
But it's a pity that people nowadays want to live indefinitely and are unlikely to live to be boys. One is the restriction of national policy, so it is not allowed to have many children; The other is the problem of economic pressure. Not every family can afford to have so many children. Coupled with the change of people's concept, the idea of son preference is not so serious, and there are not many people who have to have a boy. More people will be resigned to their fate, and even if they have two girls, they don't plan to have three more, so there is a saying that they can't have boys.
There are many secrets about having a boy circulating on the Internet:
1. Eating alkaline food is easy to conceive a boy.
2. It is easy to have boys in the same room after ovulation.
3. It is easier to have a boy if you have an orgasm.
4. Qing Gong Biao
5. The frequency of sharing should not be too high, and it is easy to have boys.
In fact, after careful study, the theoretical basis of these secrets is not very solid. Although many people say that's what I did, you can't be sure that I really gave birth to a boy. This is also a question of probability. You may have done nothing or just the opposite, so there is a 50% chance of having a boy. Only people who think they are accurate will spread it everywhere, and everyone would rather take a chance and give it a try; People who feel uncertain may not say anything, so most of them are echoing voices.
If you really want to have a boy, the most scientific method at present is to choose the sex of the third IVF, and select the sex of the embryo through genetic screening before implantation, so as to ensure the sex of the fetus. But this method is mainly aimed at sex selection of sex-linked genetic diseases. If you just want to have a boy, the hospital won't do it for you. It's illegal.
Hello, I'm glad to have the opportunity to answer your questions. I hope our answers will be helpful to you.
First of all, the simple answer to your question is luck. Of course, we don't think it will be unlucky to have girls all the time, but we prefer girls during pregnancy, because men and women are equal and there is not much difference.
Secondly, there are many rumors about the sex of children, such as sour and spicy women, or boys with sharp bellies and girls with round bellies. Even if you touch 100 boys' heads when you are pregnant, you will definitely have a boy. Actually, it's all bullshit. The real probability of men and women is half and half, so the probability of having a boy for the first time is 50%, and it is 50% for the second time, and it is every time.
Of course, we are obsessed with having boys, so we should try our best to persuade our families not to be obsessed, because if we are pregnant all the time, it will be harmful to our health, and if we really have girls all the time, it may not be good for our families or economically. At the same time, don't believe some rumors on the internet, don't eat any drugs indiscriminately, and don't conduct any experiments, because this may cause unnecessary harm to your baby. The best thing is to keep a good attitude. If the family cares about persuasion as much as possible, if the family really has no way to persuade, then try to avoid and reduce contradictions. Of course, if your husband is in charge, it will be really troublesome, and you still have to consider it as appropriate. After all, many things have become the affairs of two families now, so you can understand some things that you can't control, but don't let yourself do things that you don't like, especially becoming a fertility machine.
Why do some people just can't have boys? What is the reason?
This is a scientific problem, which cannot be clarified before a project. Why some people can only have a few boys in their life, and some people just have girls. The same question is, why can't you decide what kind of boy or girl you want?
The prediction table for boys and girls is also called the Qing Palace Table. It is said that watches in the Qing Dynasty have a history of more than 300 years. At that time, it was treasured in the Qing palace and kept by special eunuchs. It is not easy to show it to others. Eight-Nation Alliance invaded China in the late Qing Dynasty, and this watch was plundered to Britain and exiled overseas. A scholar in our country had a hard time copying it out. 1972, one of the owners of this watch can't bear to enjoy it alone and make it public. [ 1]
As for the problem of having boys and girls, in fact, having boys and girls is not determined by any prediction table, but by the free combination of genes, mostly the result of natural selection. [ 1]
It is not allowed under normal circumstances, and some of them are just coincidences. Because the sex of a person is determined by the XY chromosome in the germ cell. Because half of the sperm chromosomes are (22+X) and the other half are (22+Y). [ 1]
Therefore, X and Y in male chromosomes are the sex-determining chromosomes. When sperm and egg cells combine, the sex has been determined. [ 1]
Personally, I think boys and girls are the same, just let nature take its course!
Every time you get pregnant, the chance of having a boy is 50%, and the chance of having a girl is 50%! This is a question that cannot be chosen in advance!
When I gave birth to Dabao, my wife asked me if I wanted a boy or a girl. I said I wanted a boy, but I wanted a girl. Not bad, then gave birth to a boy! Later, when I gave birth to a second child, the same problem was placed in front of me. The two brothers are good, and the combination of brother and sister is also good. Later, I gave birth to a daughter. Make a good word! In fact, both boys and girls especially like it. There is no need to dwell on this problem that cannot be chosen in advance.
Perhaps, when you are not entangled, your wish has come true. Good luck and a good pregnancy!
This is a scientific question. I remember the biology teacher in high school said that boys have XY chromosomes and girls have XX chromosomes. To have a boy, a man's Y chromosome should be combined with a woman's X chromosome. If a man's X chromosome is combined with a woman's X chromosome, only girls can be born.
Why can only have girls?
This is a question of probability, just like tossing a coin, whether it is heads or tails. How do you know if you don't drop it? You may say that you can cheat, yes, coins can control the head and tail, and they can also control children. Now IVF technology can be controlled. At present, foreign IVF in Shanghai, America and Thailand are doing well!
As for saying that there is no need for human intervention, it is only resigned!
Pay attention to spring city millet residue! Let's share the experience of having a boy!
Due to the feudal ideas of the older elders, some families insist on having boys to carry on the family line. Others want a son because their first child is a daughter.
Giving birth to boys and girls is related to many factors, such as the mother's physique, the external environment and the occupation of men. Let's talk about the specific factors of having boys and girls first.
1: A survey shows that women are more likely to have boys if their internal environment is alkaline. This is because male Y chromosome is more active in alkaline environment, so the probability of male Y chromosome combining with female X chromosome will increase.
2. When the outside temperature is relatively low, the motility of male Y chromosome sperm will decrease. If two couples want to improve the birth probability of a male baby, they can stay in a warm environment for one month during pregnancy.
We will find that many children born to professional athletes are girls, such as Tian Liang and Yao Ming. This is because professional athletes produce a lot of lactic acid in their muscles during daily training, which inclines the acid-base balance of the body.
The older a man is, the less likely he is to have a boy. This is because the number and activity of male sperm will decrease with age.
Having a boy or a girl is random, not determined by the wishes of both men and women. There are two equal numbers of chromosomes in each cell of human body, one is called X chromosome and the other is called Y chromosome. The male chromosome consists of 1 x chromosome and 1 y chromosome, while the female chromosome consists of two x chromosomes. A mature egg and sperm containing X combine to give birth to a girl. Combine with y-containing sperm and give birth to a boy;
X sperm +X egg → girl (XX)
Y sperm +X egg → boy (XY)
Therefore, whether a man has a sex chromosome containing X or Y is determined by the combination of sperm and eggs, not by his wife or husband. This is an accidental problem.
Why do some people just can't have boys? What is the reason?
In fact, the ratio of boys to girls is half, with only a 50% chance. It's just that some factors affect the ratio of boys to girls.
Factors affecting the birth of boys
1 Boys and girls are decided by men. If the male X sperm is more active than the male Y sperm, the chances of having a girl will be greater. This is why some people always want to have boys, but they are always girls.
2 high temperature environmental impact. For example: drivers, pilots, divers, etc. The high temperature environment is not conducive to the survival of Y sperm.
The influence of three family genes. Most of the descendants of some families are girls, so the chances of having girls are very high.
In some areas, the water is acidic, and women are acidic, which is more conducive to the survival of X sperm and easier to have girls.
5 sleeping in the same room during the safe period, X sperm is more energetic and has a greater chance of giving birth to a girl.
How to improve the chances of having a boy?
1 qinggong table. It is best to be same-sex for several months. Don't calculate the wrong age. Age in the lunar calendar, the accuracy varies from person to person.
2 IVF. You can choose the sex of your child. Many people like twins, provided that you meet the requirements.
3 the same room on the day of ovulation. Ovulation day determines that Y sperm is the most vigorous, it swims fast, and it is easier to have boys.
Women in the same room will secrete alkaline liquid during orgasm. After sharing the same room, it is more beneficial for sperm Y to swim in by raising a woman's ass with a pillow for half an hour. It is easier to have a boy when you have sex with a female orgasm on ovulation day.
The best childbearing age is before the age of 25 for women and before the age of 35 for men. When you get enough sleep and are healthy, male sperm is the most energetic and it is easier to have boys.
6. Sleeping together is not as frequent as possible, and the freshness and activity of male sperm are preserved.
7 baby's gender follows the crowd. Sometimes the harder you push your baby, the less you push it. On the contrary, the child was born. Sometimes you have to have it in your life.