A new study suggests earlier sexual activity may be connected to frailty, mood, chronic illness risk, and overall health decades later.

A staggering one in 16 women said they were raped by force or coercion the first time they had sexual intercourse, according to a new study of government survey data. Survivors reported higher rates ...

Adolescent girls and young women are at high risk of sexually transmitted infections, including HIV. The Joint United Nations Programme on HIV/AIDS estimates that in some countries, girls and women ...

More than 3.3 million American women ages 18 to 44 were raped the first time they had sexual intercourse, according to a new study, and "all demographic groups reported substantial roles of forced ...

What does it mean to lose one’s virginity? For cisgender heterosexuals, it typically means first vaginal intercourse while LGBT+ individuals may have different definitions. But whatever meaning people ...

Large gender differences in satisfaction with one’s first experience with intercourse are a common finding in sexuality research. Women tend to have more negative physical and emotional experiences ...

A handful of kids reported having sex as early as 8 or 9. We know from our follow-up interviews that one boy who reported having sexual intercourse for the first time at age nine had fathered four ...

There’s rarely time to write about every cool science-y story that comes our way. So this year, we’re once again running a special Twelve Days of Christmas series of posts, highlighting one science ...