New research presented today at the European Society for Paediatric Endocrinology meeting has found a genetic region, which may control testicle development in the foetus. Men have XY sex chromosomes, ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A pair of tiny artificial testicles have been created in a lab, which ...

Testicular cancer is the most common type of cancer to affect men between the ages of 15 and 49, and around 95% of these cases are caused by testicular germ cell tumours. Although testicular germ cell ...

In prenatal ultrasounds or at delivery, many new parents look between their baby’s legs: the presence of a penis is taken as a strong sign that it’s a boy. For humans and other animals, development of ...

Many people with testicular cancer don’t have a family history of it. Still, your risk may be much higher if you have a parent or sibling with the disease. But environment and hormones also play a ...