More girls are getting their first period before the age of 9, raising concerns among doctors. Experts explain why early ...

If you’re the mom of a tween daughter, you probably already know that girls are getting their periods at a much younger age these days, but when it happens, does that actually spell the end of ...

Getting your first period can come with a lot of conflicting feelings, from confusion and fear to excitement or relief. Knowing what to expect — as much as is possible — is one thing that can make ...

More than 65 percent of women ages 15 to 49 in the United States use some form of birth control, and many of them are on hormonal birth control methods like the pill, patch, ring, implant, injections, ...

Did you know that a girl’s first period, known as menarche, is an indicator of her long-term hormonal health and future fertility? Sounds surprising, doesn’t it? While many women rarely think about ...

"We wanted to explore why this might be happening by looking at how environmental exposures from grandparents can influence when girls get their first period." Endocrine-disrupting chemicals (EDCs) ...

SAN FRANCISCO—A grandfather’s exposure to endocrine-disrupting chemicals may impact the age when his granddaughter starts her first period, according to preliminary data being presented Sunday at ENDO ...