Many mountain gorillas keep living - vigorous and socially engaged - for a decade or more beyond the years of reproduction.

Men whose mothers were exposed to stressful life events while they were in the first 18 weeks of pregnancy may have reduced sperm counts when they become adults, according to a new study. Men whose ...

Human reproduction requires both male and female gametes. Gametes are special sex cells that contain the genetic information necessary to create a new life. Men produce millions of gametes called ...

The male reproductive system refers to the bodily systems responsible for sexual function in males. It consists of external and internal structures responsible for the formation, storage, and ...

Scientists are using AI to better predict embryo health in real time.

How are whale populations faring? Traditionally, getting an answer to that question involved counting whales by taking their ...

What Is the Endocrine System? The endocrine system is a network of glands in your body that make the hormones that help cells talk to each other. They’re responsible for almost every cell, organ, and ...