Nowadays, the country has liberalized the three-child policy, but the fertility rate is still on a downward trend, the pressure of life, the pressure of education, for young people, this is like a brick on the head, so that people want to have children but dare not give birth.
However, for young couples, after marriage, they naturally face the problem of having children, and now is an era of equality between men and women, giving birth to boys or girls is the same, as long as the education is good, whether it is a boy or a girl, there will be a big success in the future.
In fact, compared with the current economic pressure, young parents prefer to have girls, because boys may face the problem of marriage dowry in the future, but according to surveys, the proportion of men and women in the mainland is seriously imbalanced, and men are 30 million higher than women, which means that many male friends will have difficulties in finding a partner in marriage in the future.
Why do young couples want to have girls in recent years, but the birth rate of boys continues to be high, and where does the gene for giving birth to girls go?
Why has the "birth rate" of boys remained high in recent years? Obstetricians tell the big truth
Medical technology is mature
Now medical technology is more and more mature, IVF is also very common, because many young couples, they can not fertilize normally, so they will use IVF way, you can also have your own baby, IVF can directly put the Y chromosome in the sperm to improve the probability of having a boy, the maturity of medical technology is also an important reason for the high birth rate of boys.
Planned pregnancy preparation
Now many young people they want to have a high-quality baby, and now young people's education level is much higher than before, they know how to prepare for pregnancy scientifically, and many young couples will also improve the quality of sperm and eggs through diet, will have intercourse at the right time, which can improve the combination rate of sperm and eggs, have a planned pregnancy, and the probability of having a boy will be higher.
Improved physical fitness
With the continuous development of medical technology, more and more difficult diseases have been effectively cured, when the two people's bodies are equally healthy, sperm are more active, soft cell function is normal, the activity of the Y chromosome will be longer, so the probability of giving birth to a boy will be higher.
Why are many young couples now experiencing infertility?
Women's side:
1. Abnormal ovarian development
If there is a problem with the woman's ovaries, it will affect the success rate of conception, because many women now stay up late for a long time to eat and rest irregularly, mental pressure, will affect the health of the ovaries, coupled with dieting and weight loss will lead to endocrine disorders, premature aging of the ovaries, insufficient estrogen secretion caused by abnormal egg development, do not have good conditions for pregnancy, can not successfully complete the conception.
2. Menstrual disorders
The lack of estrogen in the body for various reasons will lead to menstrual disorders, female friends are difficult to find their own ovulation period, not having intercourse during the ovulation period will greatly reduce the probability of sperm-egg union, which will also cause pregnancy difficulties.
3. Blocked fallopian tubes
Even if the egg matures and has the conditions for conception, if the fallopian tube is blocked, it cannot be combined with the small tadpole, which also causes infertility.
4. Gynecologic inflammation
Gynecological inflammation is an important factor inducing infertility, the physiological structure of female friends is relatively special, if you do not pay attention to personal hygiene in time, it is easy to aggravate the inflammation, and extend a variety of difficult problems of pregnancy, affecting conception.
Male aspect:
1, the quality of small tadpoles is not good
If the sperm quality of male friends is not good, it cannot be successfully combined with eggs, such as male friends staying up late for a long time, smoking and drinking, and facing electronic radiation for a long time will hurt the quantity and quality of sperm, so that sperm cannot survive in the body, and they cannot be successfully conceived.
2. Mutually exclusive reaction of eggs and small tadpoles
In real life, there are still this type of couple, their sperm and egg quality are not a problem, but after two people are together, sperm and eggs have a mutually exclusive reaction, and it is precisely because of the existence of this gene that they cannot conceive normally and are prone to infertility.
What is the difference between IVF and regular babies?
Elimination of disease genes
Natural fertilization is the competition between many sperm, the fastest and most dynamic sperm, the first to reach the egg and egg combination energy vitality is very strong, but it is also very difficult to ensure that it can not carry a genetic disease, IVF will be selected in vitro in advance, if you carry a genetic disease, this kind of sperm will be excluded, so that you can improve the quality of the baby, give birth to a healthier baby.
IVF is relatively long-lived
Because the staff has screened the sperm, the probability of such a baby suffering from genetic diseases will be reduced, and the chance of survival from illness is less natural than that of naturally fertilized children, and this type of baby is easier to live long in life.
Of course, these are only the results of inference from the operating principle, IVF technology is only about 40 years old, and there is no comprehensive comparison of this aspect.