Sex

Some children with a rare genetic condition appear female at birth but later develop a penis and testes around the time puberty begins. But what causes this to happen?

Addyi, the new libido-enhancing pill for women, was approved by the FDA, but many health care professionals are still skeptical about whether women really need the drug.

Your gender might affect how you experience a broken heart.

Studies show women do cry more than men — though not, as Tim Hunt claimed, because they can't take criticism, but because of various biological, social and environmental factors.

An update to Apple's Health app that is set for release this fall will let users track their sex lives, but experts say this tracking feature alone has little value for people's health.

Ladies with low libido could soon get their own version of the "little blue pill," but this cure for what ails a woman's mojo might not work.

Scientists haven't found a drug to boost sexual desire in women because desire is much more complicated to treat than sexual performance, experts say.

Transgender people who take testosterone as part of a transition from female to male can sometimes experience severe acne as a side effect of the treatment, according to a new report.