Smoking in pregnancy increases the chances of a girl

Smoking may reduce the likelihood to give birth to a boy and prevent the development of male embryos.
Despite the fact that almost 52% of newborn boys in the West, the possibility of giving birth to a girl gets for smoking parents. In the study participated 9 000 pregnant women in Liverpool. The results are amazing. In fact girls were born more often than boys, for those parents who smoke. Mothers who smoked during pregnancy gave birth to a boy 3 times less than for non-smoking parents. If we take into account the rate of health and age of mothers, it's Lear, where the father smoked, the chance to give birth to a boy was reduced in 2 times.

A study conducted by Liverpool Medical Pediatric Institute invoke resonance in the international scientific community. After scientific words, he asks questions about smoking affects the balance of the population.

There are a lot of work on this topic affects pregnant women smoking at new birth weight, but today it became clear that smoking mothers gave birth to girls than boys, explains Alison Infantry Regiment, a senior professor of pediatrics at the University of Sydney, Australia.

The studies were examined 9 000 pregnant women who were in hospital in Liverpool for women in 1998-2003. The researchers found that smokers gave birth to girls, besides second hand smoking can affect the sex of the child. Non-smoking mothers, whose husbands smoked gave birth to a boy and less.

The study was conducted by a group of pediatricians, led by Professor Bernard Brabeen. The scientists found that substances contained in cigarettes, such as nicotine, prevents sperm from the male chromosomes, to get the egg.

Aim of the study was to determine the sex of a child depends on maternal smoking during pregnancy. When we corrected the results, it became clear that the chances of giving birth, when twin girls pregnant mother smokes. We do not know why. We assume that this is because the sperm with the Y chromosome, which is responsible for the boys. This spermatozoon is more sensitive to negative changes in the mother. By Brabeen. .

Smoking reduces estrogen levels and make changes in the cervix. The conclusion is clear: if you want to climb the changes to give birth to buy do not smoke during pregnancy.