New research from the University of East Anglia shows that an evolutionary force known as 'sexual selection' can explain the persistence of sex as a dominant mechanism for reproducing offspring.
About 40 percent of pregnancies across the United States were unwanted or mistimed, according to the first-ever state-by-state analysis of unintended pregnancies.
When people say they "had sex," what transpired is anyone's guess. A new study from the Kinsey Institute at Indiana University found that no uniform consensus existed when a representative sample of 18- to 96-year-olds was ...
Pre- and post-menopausal women who self-rated themselves as being sexually satisfied had a higher overall psychological well-being score and scores for "positive well-being" and "vitality," compared with sexually dissatisfied ...
The US food and drug safety watchdog warned Thursday that an over-the-counter men's sex aid, labeled as all-natural, contains a chemical similar to the active ingredient in Viagra and could be dangerous.
An Indiana University study published in the September issue of the International Journal of Sexual Health found that women who feel more positively about women's genitals find it easier to orgasm and are more likely to engage ...
Alaska again ranks first in the nation for chlamydia and is second for gonorrhea, state public health officials announced Tuesday.
Germany's Green party filed a formal request in parliament Wednesday for the government to probe the level of potentially dangerous chemicals in sex toys.
Romantic opportunities appear to influence women's sexual identities—but not men's, suggests a new study that will be presented at the 110th Annual Meeting of the American Sociological Association (ASA).
The average British man or woman has slept with 2.8 million people -- albeit indirectly, according to figures released Wednesday to promote awareness of sexual health.