Stress makes it easier to conceive a girl. What factors affect conceiving a boy?

　　According to a new British survey, parents who are under chronic stress are more likely to have a girl. Survey results from the 1995 Japanese earthquake and the 9/11 attacks in the United States confirm this inference. In addition, families suffering from poverty also have higher birth rates of girls.

　　Researchers also investigated abortions in California from 1989 to 2001 and found that when the unemployment rate increased, the abortion rate of male babies also increased.

　　A reasonable explanation for this is that stress during pregnancy makes it easier for male fetuses to miscarry. In contrast, research results show that frequent sex is more likely to cause boy , less sex life is more likely to give birth to a girl, and excessive pressure is usually an important factor leading to less sex life.

　　What factors affect the birth of a boy or girl?

　　1. Sexual intercourse day affects boys and girls . The vagina, which is usually acidic, becomes alkaline near the day of ovulation. Considering sperm Depending on the nature of Y sperm, purposefully choosing the day of intercourse may achieve the effect of controlling gender to some extent.

　　2. Affected by genetics, there is often a family tendency to give birth to boys or girls.。

　　3. Affected by acid-base environment . Y sperm is resistant to alkali but not acid. Y sperm is active in an alkaline environment and easily combines with the egg. X sperm is active in an acidic environment and is easy to fertilize. Female athletes are more likely to get girls, possibly because acidic substances such as creatinine and creatine in the blood increase after strenuous exercise, which is not conducive to the activity of Y sperm. Therefore, there are attempts to change vaginal pH to control gender. ……Environmental changes determine whether boys or girls are born.

　　4. Impact on sexual life . Reduce the frequency of sexual intercourse, increase semen concentration and sensitivity of sexual contact, choose the time of sexual intercourse during the ovulation period, fully increase the woman's sexual desire during intercourse, and allow the woman to reach orgasm. ejaculation , it is easy to get a male fetus. Because the woman’s secretions during orgasm contain alkaline. On the contrary, having sex too frequently and ejaculating prematurely can increase the chance of giving birth to a girl.

　　5. The influence of nutritional quality . Pregnant women who eat a lot are more likely to give birth to baby boys. Foreign scientists recently found that pregnant women who eat a lot during pregnancy usually give birth to baby boys, and baby boys born at the same time are heavier than baby girls. Researchers conducted a 6-month observation study on 244 pregnant women and found that the secretion of testosterone from the testicles of baby boys is the direct cause of the large food intake of pregnant women carrying baby boys. In other words, pregnant women with large food intake are more likely to give birth to baby boys.

　　6. The influence of metal elements . Eating salty and potassium- and sodium-rich foods in the first 6 weeks of pregnancy can increase the chance of giving birth to a boy.

　　7. Seasonal influence . In my country, it is easier to conceive in the spring and autumn to give birth to a boy. Girls are more likely to conceive during summer and winter.

　　8. The influence of age . For every 5 years the couple's age increases, the chance of having a girl increases by 1‰. If the husband is too old, the chance of giving birth to a boy decreases. There are more boys than girls between the ages of 25 and 29, and more girls than boys under the age of 25 and over 29.

　　9. Gender formation is related to ovulation time. The motility of X-type and Y-type sperm is different. Y-type sperm are smaller and more energetic than X-type sperm. female Swimming in the reproductive tract is fast.