The mother of the second child told the saying that early birth is expensive , boys are born premat

I don't think there is any scientific basis, it's just that because the levels of male and female hormones are different, the result is that male babies will develop faster in their mother's womb than female babies.

Whether it is preterm birth - 28 weeks and less than 37 weeks of birth - or term - 37 weeks - 42 weeks, the shorter the pregnancy cycle of the pregnant woman, the higher the proportion of male babies born. Although there is no special study on this situation in China, some relevant data also show that the number of female babies in lazy months is indeed more than the number of male babies, and the number of premature male babies is indeed more than the number of female babies. In other words, the proportion of male babies born prematurely is significantly higher than that of female babies.

There is no scientific basis, because whether the child is born prematurely or depends on the physical fitness of the pregnant woman and whether the fetus is healthy, as well as whether the pregnant woman has exercise during pregnancy and so on.

There is no scientific basis. Boys and girls are the same fetus, premature birth and late birth, both because it is related to fetal development and intrauterine conditions, and has nothing to do with gender.

There is no scientific basis for this, the fetus is born prematurely or late is completely determined by his development in the mother's body, generally as long as the pregnant woman has a reasonable and normal diet, the basic birth time and due date will not be much worse, and it is normal to give birth a few days late and have nothing to do with the sex of the fetus.

Boys develop faster and their lungs develop better than girls, so girls are born later when they are pregnant in the same month. Due to the different sexes of the fetus, boys generally start and trigger earlier than girls. This is also what the older generation said about the boy born prematurely and the girl Lai Yue.

I don't think there's any basis for that, because my daughters were born early. This should be the old generation's statement, but it doesn't work anymore.

Because the development of the fetus is not only affected by these components, but also by the function of the placenta, the nutritional intake during pregnancy, which has an impact on the development of the fetus. Therefore, in fact, it is not enough to take "boys born prematurely, girls lazy months" as the identification norm, which has no superstitious basis and can only be used as a reference.

There is no basis for this, the early or late birth of the child is related to the suitable fetal position, and if the fetus enters the pelvis earlier, then the start, the presence will be relatively early and the pelvis of the pregnant mother These reasons are the comprehensive determination of the time of birth of the child.

Many mothers have heard that boys are generally born prematurely, and girls are born late, and some mothers have asked people around them, and the results are the same. I'm very curious, is it really a matter of "giving birth to a noble son early"?

Previously, someone online launched a similar poll. 271 boys and 237 girls were born before their due dates, accounting for 23% and 20% of the total, respectively. The men and women born later than the due date are 348 and 221 respectively, that is, there are many boys born later, which is seriously inconsistent with the results of the previous poster's "inquiry", and on the whole, the difference in numbers is not enough to show any pattern.

A Norwegian study analysed birth data from about 1.7 million babies born between 1967 and 1988 and found that the ratio of full-term babies born earlier than the expected date (40 weeks) was 10 weeks; Babies born after the due date are equal for men and women.

In France, a larger population study found that the proportion of male fetuses born in both preterm and full-term babies decreased with the number of weeks of gestation. Moreover, this trend is certain ethnically specific, and it is very pronounced in the white population, but it is not found in the black population. However, the small sample size of blacks collected in this study may also lead to statistical discrepancies.

From the statistics, we can see that the "early birth of a noble son" has a certain amount of truth in terms of statistical probability.

Why do baby boys like to report early?

Male and female hormone levels affect fetal development.

It has been suggested that the difference in male and female hormone levels between men and women means that boys may develop faster in their mothers' wombs than girls. It is important to know that a baby's birth weight is one of the important criteria for measuring the level of intrauterine development. Among full-term babies, male babies tend to have heavier birth weights than female babies.

If we compare the length of gestation for babies of the same birth weight, we find that when the birth weight is the same, the duration of the pregnancy of the mother of the boy at birth is usually shorter than that of the mother of the girl.

In real life, we often hear the old people in the family mention that boys are born prematurely and girls are procrastinated, which means that boys are usually born before the due date, but girls are born later than the due date, so why are boys easy to give birth early? Is there any scientific basis for this claim? Let's take a look!

The due date is inherently inaccurate

Although the due date is scientifically calculated, the average time is only calculated based on the gestation time of human beings, that is, the month of the last menstrual period is added to 9, and the date is added to 7 (if the months add up to more than 12, it becomes minus 3), so there is also a certain error in the due date. In ancient times, it was speculated that women's menstruation depended on the fullness of the moon, and naturally there would be a certain amount of error, and due to the accumulation of a long time, many people thought that boys would be born prematurely and girls would be born later.

There is a common misconception about the concept of preterm birth

Many people believe that as long as the child is born before the due date, it is premature, in fact, this understanding is wrong, according to the medical point of view, as long as the baby is born at 37-42 weeks is full-term, not premature. In other words, this "premature birth" and "procrastination" were originally a vague noun. As a result, when people heard this statement, they naturally thought that the birth of a boy must be born prematurely, and the birth of a girl must be delayed.

There is no scientific basis for the susceptibility of boys to preterm birth

There is no scientific basis for the claim that boys are prone to preterm birth, and in real life, although there have been cases where boys are born earlier than their due dates, there are many reasons why pregnant women give birth early, not because they are pregnant with a boy. The sex of the fetus in the womb is judged by chromosomes, which are 46xy for boys and 46xx for girls. There is no relationship between the gender and the due date, so whether a child is born early or late, it cannot be used as a basis for the child's gender.