"One day, men might be able to receive a small molecule that would deplete sperm but be reversible," Jain said. Researchers have long understood that cell connectivity via intercellular bridges is ...

CHICAGO (Reuters) - U.S. researchers have found a way to coax human embryonic stem cells to turn into the types of cells that make eggs and sperm, shedding light on a stage of early human development ...

In a breakthrough that sounds closer to science fiction than laboratory routine, Japanese researchers have created mice whose sperm emit light, allowing fertility to be monitored inside the body as it ...

A colony of human embryonic stem cells is seen on a computer monitor at the University of Wisconsin–MadisonDarren Hauck / Getty Researchers at Newcastle University in England report they have coaxed ...

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 ...

The causes of male infertility can be hard to diagnose, with many tests failing to detect genetic defects. Sometimes, infertility doesn't even involve the genes themselves.

Men who do not produce sperm can’t be helped by existing fertility treatments, but a start-up is now claiming it can grow ...