Condom use among younger gay and bisexual has declined over the last decade, but sex education could help reverse the trend.

To find out how sex relates to lasting love, scientists studied prairie voles, one of the few mammals that form long, monogamous relationships.

Textbooks used by a majority of introductory US biology classes paint a "Men are from Mars, Women are from Venus" image, running afoul of scientific evidence.

A plant-based diet may improve sexual function in men being treated for prostate cancer, according to new research.

"Long COVID symptoms really may have a physiological and psychological impact on sexual well-being for women."

Low sexual satisfaction for middle-aged men is linked to memory decline later in life, a new study finds.

A survey of people using Ashley Madison, a website for facilitating infidelity, didn't turn up much remorse.

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.