If you've ever been called a slut or a slag, or been scared of being called one, then you know what it feels like to experience the double standards surrounding promiscuity. We've all grown up ...

“Promiscuous” is a term that is almost always used when speaking about a woman; it is most often pejorative. It refers to a woman—usually a young woman—who has sex frequently and casually. This ...

New research shows that variation in mating behaviours, parental care and differences in ornamentation of the sexes in bird ...

People often ask what kind of human sexual relationship is most evolutionarily "natural." Is human nature adapted for promiscuity or long-term relationships, for example? And if we're wired for ...

A little known sexually transmitted infection can boost the survival of patients infected with HIV—a more dangerous virus, researchers say. GB virus C (GBV-C) is the only known case of a potentially ...