sex

Even though teen pregnancy rates are at an all-time low in the United States, the country has still experienced more pregnancies and sexually transmitted…

Before long, human embryos will be made so easily in the laboratory that many people will choose that route for having children. The option would offer genetic control at an ethical price.

Conventional wisdom for couples trying to conceive is the sex that's happening while the woman is ovulating is the sex that counts. But a recent study…

Sex education conjures images of teenage giggles and discomfort. But Bronx-based teacher Lena Solow is more than happy to talk about the topic.

Does the imbalance start at conception or are there factors during pregnancy that favor the birth of slightly more males than females? Researchers find clues that point to factors in the womb.

Levels of testosterone and other naturally-occurring reproductive hormones play a limited role in driving menopausal women’s sexual function, according to…

African women signed up for a trial to test pills and gels that can prevent HIV. They swore they were complying. Only they weren't. Reasons range from conspiracy theories to ... skin care.

Thistle extract, carrot dye and fair trade labels aren't just for tea. Condoms with fair trade and vegan certifications are moving into a market dominated by Trojan and Durex.

City Supervisor Scott Wiener said he is taking a pill that can dramatically reduce the risk of HIV infection. He appears to be the first elected official to have gone public with the decision.

What do skipping school, failing tests and engaging in risky sexual behavior have in common? Lots, according to Indiana University researchers who combed…