Menstruation determine the sex of the child

The beginning of menstruation can determine the sex of the child. If you are faster then the possibility of getting started menstruating girls will be even greater.

According to research at M & K Health Institute in Hyogo, Japan, women who had menarche (first menstruation) of their peers tend to childbearing women. In order to determine whether there is a relationship between early menarcheal age and sex ratio of offspring, the researchers asked more than 10,000 mothers about their age at the start of menstruation and sex of their baby.

"This time menarchea be a risk factor for breast and ovarian cancer, and is also associated with increased rates of abortion continues to increase," the researchers said in a press release the University. The study findings are published in the latest issue of the journal Human Reproduction.

The study found that 46 percent of children born to mothers who started menstruating at age 10 were boys. This figure increased to 50 percent when the woman began menstruating at 12, and 53 percent when women entered the menarche at age 14.

This study adds evidence to previous studies, which found a high sex hormone estradiol in women who started menstruating before age 12. "This can cause the fertilized egg cell fall," said Lead researcher quoted Misao Fukuda IOP. (MEL)