The sex of a child depends partly on the weight of the parents, say Chinese researchers. They conducted a detailed study, which established that the slender parents more boys are born than girls. About it writes The Daily Mail.
All the analysis was applied to 8 500 pairs, have passed through the process of infertility treatment. Scientists took into account not only the outcomes, but also the weight of parents who successfully inseminates children.
It turned out that the chance to give birth to a girl, a slim parents above 7%. In the group of obese fathers of newborn boys were 27% higher than that of girls. Scientists suggest, completeness leads to an increased concentration of Y-spermatozoa, leading to the formation of the foetus male.