There are many potential causes of infertility, and it can be challenging to pin down just what the problem is when a couple is having trouble getting pregnant. Now, researchers show that a few key ...

The study's main contributors include (L-R) graduate student Joshua Shaffer, professor Upasna Sharma, and postdoc Alka Gupta. (Photo by Carolyn Lagattuta) The pioneering research of UC Santa Cruz’s ...

Brazilian researchers have identified a previously unrecognized function of sperm that is unrelated to reproduction. A study of 13 patients admitted to the Hospital das Clínicas da Universidade de São ...

New multicentre data show that serum testosterone levels and testicular histology help predict sperm retrieval success in ...

In the United States, an estimated 645,000 men ages 20 to 50 have azoospermia, a condition in which no sperm are present in their ejaculate. Now, scientists are testing a potential treatment: ...

Testosterone is a hormone that supports muscle mass, bone strength, mood, cardiovascular health, and intimate health. Low testosterone can contribute to symptoms like fatigue, … ...

Jaiwen Hsu was an active 11-year-old when he developed pain in his left knee that forced him to sit out a few soccer games. What his parents thought was a sports injury turned out to be osteosarcoma, ...

A man in his early 20s received a transplant of his own sperm-producing stem cells, which had been frozen since his childhood, in an attempt to regain fertility. Doctors are waiting to see if the ...