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

Sperm are male reproductive (sex) cells. The word "sperm" can refer to spermatozoon (singular) or spermatozoa (plural). Sperm are tiny cells with an oval-shaped body and a long tail. They measure just ...

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 ...

A number of factors can play a decisive role in some couples' inability to conceive, which may lead them to turn to fertility treatments like IVF or IUI. But before couples get to that point, they ...

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 ...