A woman’s fertility window refers to the short span each cycle when pregnancy is biologically possible, but it’s often ...

Many transgender men and other gender-diverse people opt to take testosterone to bring about male secondary sex characteristics, such as a deeper voice and thicker body and facial hair, and to ...

How does ovulation affect a woman’s desire for sex? This is a controversial question, and it has stimulated debate for at least half a century. When I taught a course in human sexual behavior, way ...

For the first time, scientists have filmed the process by which eggs are released from ovaries during ovulation — and they've captured it in exquisite detail. In the impressive new video, a mature ...