More than 30% of patients stop taking endocrine therapy early and many don't take it as prescribed, despite its life-saving benefits.

A baby's cry triggers the release of oxytocin, a brain chemical that controls breast milk release in mothers, a new study with mice shows.

A hormone called GDF15 makes insulin work better in rodents, report researchers. Could it be a way to treat diabetes in humans?

Inhaling microscale and nanoscale plastic bits disrupted the sex hormones of rats in a recent laboratory trial.

A new discovery provides a tool for developing better insulin preparations that millions of people around the world depend on.

Red-bellied lemur poop reveals that the males experience a fourfold increase in a female sex hormone when their mates are pregnant.

The standard understanding of oxytocin, colloquially known as the "love hormone," may be all wrong, prairie vole research indicates.

Female and male mouse hearts respond differently to the stress hormone noradrenaline. That could have implications for human heart health.

New research finds a link between a hormone called anti-Müllerian hormone (AMH) and cholesterol levels at the time of menopause.

Researchers have created a list of guidelines for counseling transgender men about fertility. See the list of nine recommendations here.