When it comes to male fertility, not all sperm are created equal. In an Instagram reel, embryologist Dr. Lisa Lee (@drlisalee_ivf) broke down the differences between "good" and "bad" swimmers, ...

People use donor sperm to get pregnant for many reasons. A couple may use donated sperm due to male infertility. Single women or LGBTQIA+ couples may use a sperm donor to help them build a family.

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 ...

Human semen not only accumulates genetic mutations with age; as the percentage of sperm carrying potentially serious mutations increases, so does the risk of developing diseases in offspring. This is ...

Until recently, the only way to make eggs or sperm was the old-fashioned way: in the ovaries and testes. In the not-too-distant future, it may be possible to use cells from almost any part of the body ...

First it was human embryos. Now scientists are trying to develop another way to modify human DNA that can be passed on to future generations, NPR has learned. Reproductive biologists at Weill Cornell ...

Physicians Raymond Bunge and C. M. Kinloch Nelson noticed something unusual happening at their Iowa clinic in the early 1970s: a growing number of men seeking infertility treatment. To investigate ...

The so-called ticking biological clock has been framed largely as a concern for women. We talk about egg freezing, ovarian reserve, and the ticking timeline of maternal fertility. Meanwhile, the male ...