Dr. Smurf revealed the startling reality of the male reproductive system and what happens when people don't release sperm in a YouTube simulation ...

Sperm cells have a monumental task, but their days are numbered. From the moment they're made in the testes to the time they may spend winding their way up the labyrinthine of the female reproductive ...

A new study shows that lab-grown sperm cells can be derived from stem cells. July 9, 2009 — -- The face of infertility-- in literature, in the media, in advocacy groups -- is so predominantly ...

While men may be able to have children much later than women, doing so could come with an increased risk of inherited disease for their children. Researchers from the Wellcome Sanger Institute have ...

Researchers have found that targeted delivery of messenger RNA (mRNA) can restore sperm production and fertility in ...