We were unable to process your request. Please try again later. If you continue to have this issue please contact customerservice@slackinc.com. A progestin/testosterone gel for contraceptive use by ...

It’s a growing problem in relationships. About 1 in 10 couples struggles to get pregnant within a year, which is the clinical ...

It takes approximately 14 days for sperm to be created in a process called meiosis. Six of these days are spent in the pachytene phase, during which chromosome pairs from a mother and father align and ...

Scientists at Michigan State University have uncovered the molecular “switch” that powers sperm for their final, high-speed dash toward an egg. By tracking how sperm use glucose as fuel, the team ...

Unlike women, who are born with all the eggs they'll ever have, men can continue to produce sperm throughout their adult lives. To do so, they require a constant renewal of spermatogonial stem cells, ...

A drug once known for zapping zits might now help men who’ve been shooting blanks. In a small study, the medication jumpstarted sperm production in severely infertile patients, opening a new door to ...

Add Yahoo as a preferred source to see more of our stories on Google. What sperm can tell us about a man's overall health — and how it affects pregnancy, maternal health and more. (Photo illustration: ...

For years, male fertility has been seen as something that lasts forever. Many people believe that men can father children at any age without any issues. While it is true that men do not experience a ...

LNP is delivered to both germ cells and Sertoli cells. (Image: PNAS, CC BY) Infertility affects one in six couples globally, with male factor infertility accounting for almost half of these cases. NOA ...

If you are having sex once a week then you need have no concerns. Sperm production does not depend on the frequency of sex. It depends on the health of the reproductive organs of the man. Prolonged ...