Testicular donations are extremely rare. The testicles are well understood by scientists, and there’s little to no demand for testicles by medical researchers. Donated testicles also aren’t ...

The spermatic cord provides blood flow to the testicle. Testicular torsion is when a testicle rotates on this cord. It can lead to pain, swelling, and other symptoms and needs urgent medical attention ...

Most people with a penis have two testicles in their scrotum — but some only have one. This is known as monorchism. Monorchism can be the result of several things. Some people are simply born with ...