A single gene in the shorebird species known as ruffs controls the levels of testosterone in males, and this in turn affects ...

More than half of all men with Klinefelter syndrome (KS) are unaware that they have the condition. Among those who do receive ...

As well as genetic and hormonal factors, lifestyle also plays a major role.

Researchers at Linköping University in Sweden made an unexpected discovery while investigating genetically unique women.