Stress increases the risk of Alzheimer's disease in female mice, but not in males, according to a new study.

"These bacteria can be transmitted through heterosexual, vaginal sex, something that has never been shown in research before."

It's the orgasm gap: Men tend to experience orgasm substantially more often than women do within heterosexual partnerships.

It was assumed snakes didn’t have a clitoris – now it turns out they have two.

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

Does having had COVID-19 change the body's response to other threats? Depends on your sex, researchers report.

Older adults who feel more positive about aging have a healthier sex life, according to new research.

A look at vascular insulin resistance shows how six cans of soda a day and being more sedentary affect men's and women's bodies.

Epigenetic changes linked to Parkinson's disease are different in men and women, according to a new postmortem analysis of brain neurons.