Testicles, also called testes or balls, are oval-shaped organs that sit in a sac that hangs behind the penis. The main job of testicles is to make sperm and produce testosterone. Testosterone is ...

Researchers at Israel's Bar-Ilan University have grown "laboratory testicles" they hope could eventually ease male infertility, which affects 10% to 15% of American men. Getty Stock Image This is ...

Testicle sizes vary widely. Smaller testicles are not usually a problem. However, small testicles can sometimes indicate a health condition. As well as length, health professionals sometimes ...

BMJ Journals Doctors then warmed the oxygen-deprived organ, before locking it back into socket via a procedure called an orchidopexy (often used to treat children whose testicles don’t fully ...