Traditional belief is that changes in the appearance of a pregnant mother can reflect the gender of the fetus. There is a saying among the people that \”a beautiful woman has a beautiful mother and a male has an ugly mother\”, that is, if the mother \”turns ugly\” during pregnancy, it may mean that she is a boy, and if the skin becomes more delicate and smooth, she may be a girl.
Is this true? Is there any scientific basis for this?
According to scientific evidence, this statement is incorrect. 
Truth analysis:
Some people believe that the reason why the complexion becomes better after pregnancy is because she is pregnant with a girl, which increases the estrogen level in the pregnant woman\’s body, causing the complexion to improve.
Estrogen can indeed reduce skin wrinkles, delay skin aging, and plays an indispensable role in maintaining female endocrine.
However, excessive estrogen is not good for the skin, and can easily induce breast, ovarian and uterine diseases.
After pregnancy, the hormone levels in the expectant mother\’s body will inevitably change significantly, and estrogen, progesterone, and testosterone will all increase significantly. Estrogen plays an important role in maintaining the normal structure and function of the skin and subcutaneous tissue. Although it can make women\’s skin more tender, if the level is too high, it can also lead to skin pigmentation and spots.
Due to supplementation during pregnancy and environmental pollution, the increase in estrogen-like hormones has caused the estrogen levels of many pregnant women to be \”too high\”, and they may become ugly.
During pregnancy, the pituitary gland function is active, the metabolism of melanocyte-stimulating hormone increases, and estrogen and progesterone increase, which promotes the function of skin melanocytes and increases melanin. Pregnant women\’s skin tone becomes worse, and pregnancy freckles may appear on their cheeks.
Therefore, due to the increase in estrogen and progesterone levels during pregnancy, the skin condition of pregnant women is mostly poor. 
However, the levels of estrogen and progesterone have nothing to do with the gender of the fetus. Whether it is a boy or a girl, there is no difference in the impact on the hormone levels of pregnant women. Therefore, there is no \”beautiful woman and ugly mother\”uo; statement.
The most authoritative medical database has shown that pregnant mothers or older people should no longer think that special techniques, dietary methods, fortune telling, etc. will not affect or even change the gender of the child.
In the end, the gender of the child still depends on the chromosomes. Among the 23 pairs of chromosomes in each person, one pair can determine the gender of the child. For example, if the man\’s sperm and the woman\’s egg combine, and after fertilization, \”XX\” chromosomes are formed, then the child will be A female baby; \”XY\” chromosomes means a male baby.
Summary:
It is unscientific to determine the gender of the fetus using the phrase \”female is beautiful, male is ugly\”. Pregnant women\’s estrogen has nothing to do with the sex of the fetus. The skin condition of pregnant women during pregnancy is related to many factors such as emotional changes, work and rest, nutrition, dietary structure, living environment, and the application of skin care products. It is recommended that pregnant women establish a regular diet, life and rest in early pregnancy, supplement nutrition appropriately, and adjust their emotions.
