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 ...

Taking sperm directly from the testicles rather than using semen may be a new way to help couples conceive through IVF. The approach has been used for some time in men who are infertile for reasons ...