Boy Or Girl? Sex At Birth Isn’t A 50-50 Coin Toss, Harvard Study Says
- Posted on October 5, 2025
- By Bing News
- 2 Views
Boy Or Girl? Sex At Birth Isn’t A 50-50 Coin Toss, Harvard Study Says
A baby’s sex at birth may not be a 50-50 coin toss after all, according to a new study from the Harvard T.H. Chan School of Public Health. The research, published July 18 in Science Advances, found that birth sex appears to be linked to maternal age, certain genes, and the sexes of older siblings — …
