Semen is a fluid that carries sperm, or male reproductive cells, out of the body during ejaculation. The average amount of ...

If you were thinking of kicking off tonight’s foreplay with some oral sex for your partner with a penis and planning on swallowing once your partner finishes, you might be wondering what exactly is in ...

In her new book "The Stronger Sex," science journalist Starre Vartan dispels myths and misconceptions about the female body. When you purchase through links on our site, we may earn an affiliate ...

Modern life is affecting our bodies more than we realize. Everything from the air we breath to the food we eat has been shown to disrupt the delicate balance of our biology. One area that is ...

This essay is part of a series on environmental health. I can’t remember when I learned that women’s fertility starts to wane in our 30s; it feels like I was born knowing that my eggs had a sell-by ...

(Reuters) - Autumn is the time of year most associated with bumper crops of new babies, and according to an Israeli study there may be a scientific reason for it: human sperm are generally at their ...

NEW YORK (Reuters Health) - Autumn is the time of year most associated with bumper crops of new babies, and that may be because human sperm are generally at their healthiest in winter and early spring ...