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

As the saying goes, "give birth to a noble son early", which means that if you conceive a boy, you will be born earlier than your due date, and if you conceive a girl, you will be born later than your due date. There are also mothers who have asked the people around them, and the results are the same, and some pregnant mothers in life will use the "registration time" of the fetus to reverse the sex of the fetus, so,Is there really any truth to this statement that boys are born prematurely and girls are lazy?

Some foreign research data show that whether it is in preterm infants (babies born at 28 weeks and less than 37 weeks) or full-term infants (born at 37 weeks to 42 weeks), the shorter the mother's gestational time, the higher the proportion of male babies born, and there is no more detailed research in our country.

Why are baby boys more likely to be born early?

Effect of hormone levels

Male and female hormone levels differ in the body of men and women, so boys may develop faster in their mother's womb than girls. As a result, boys tend to weigh more than girls at birth, so boys are more likely to be born earlier than their due dates if they have the same birth weight in full-term babies.

The boy has an active personality

Most male babies are more active than female babies and want to come out early to see the world, while female babies are quieter and stay in their mother's belly for a few more days.

Births within two weeks before and after the due date are within the normal range。Generally, it is called "premature birth" when born before 38 weeks, and it is normal to be born between 38 weeks and 42 weeks, and those born after 42 weeks are called "overdue birth", the expected date of delivery is only an estimate, and the baby's launch is also related to the physique of the pregnant mother.

In fact, the gender of the baby is already determined at the moment of the union of sperm and egg, and will not change due to the length of pregnancy。Although there is some truth in giving birth to a precious child early, it is not completely correct, so it is not advisable for expectant mothers to extrapolate the baby's gender according to the comparison between the baby's real "start" time and the expected date of delivery. For the vast majority of expectant mothers, there is no need to be particularly anxious about the gender of their baby, as long as they are born healthy and healthy, it is a happy thing.

Not really. In fact, the early and late birth of a child has a relationship with the physical constitution of the mother and the development of the baby, and has little to do with men and women.

There is no scientific basis. The girl I gave birth to was born prematurely, but this is a complete coincidence and has no scientific basis.

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.