There is no "normal" set of bacteria in the vagina; each woman has their own healthy state.

One researcher claims to have found new evidence of the famed orgasmic spot, but other experts are skeptical.

Those who cheat on their partners are more likely to practice unsafe sex than those in open relationships.

The proportion of middle and high schools teaching STD and pregnancy prevention has not increased in recent years, an...

The idea that oral sex can lead to oral cancer is, at this point, speculation, experts say.

The U.S. approach to curbing the spread of sexually transmitted infections needs an update, an expert says.