See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. When it comes to male fertility, not all sperm are created equal. In an ...

You may know it takes one sperm and one egg to make a baby but, if you're like most people, you might not remember much else about sperm from biology class. If infertility is an issue for you and your ...

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 ...

There are countless facts regarding sperm, the male reproductive cells. For this reason, it can be hard to split truth from myth. Although many people have some knowledge about sperm, many ...

Many of us still believe some pretty unscientific, long-standing myths about sperm, semen, and male fertility. From sperm speed to nutritional makeup, here are 12 of the most popular urban legends. In ...

Sperm cryopreservation offers individuals a way to collect and store their sperm for later use. Though originally developed for people undergoing cancer treatment, preservation can benefit several ...

A sperm's quest to fertilize an egg is not easy. Of the roughly 250 million sperm ejaculated into the human vagina during intercourse, fewer than one in a hundred will survive the perilous trek up the ...