menstruation

With human research trials resulting in dozens of successful deliveries in the US and abroad, doctors move toward offering the surgery clinically, while working to learn all they can about uterine and transplant biology from the still-rare procedure.

Following vaccination, some women claim their periods have changed, leading to rumors about how the shots affect recipients’ reproductive systems, and even others’ by proxy.  

A long-term study finds that these rhythms align at certain times of women’s lives, shedding new light on the controversial idea that lunar phases influence human reproduction.

Hundreds of loci in the genome are associated with the age at which a girl starts menstruating.