Yes, it is possible for a man not to have testes. This condition is known as anorchia and is a result of a genetic mutation that occurs during fetal development. Anorchia can be caused by several different genetic abnormalities, including a missing Y chromosome or a mutation in the SRY gene. This mutation affects the development of the testes, which can lead to the absence of both testes in a male.
In addition to a lack of physical testes, those with anorchia may experience a number of other health complications. For example, they may have difficulty producing testosterone, which can lead to infertility, as well as an increased risk of developing certain medical conditions, such as heart disease and diabetes. They may also experience difficulty during puberty due to an inability to produce the hormones necessary for proper sexual maturation.
Anorchia is a rare condition, but there are treatments available for those who are affected by it. Hormone therapy can be used to help improve testosterone production and fertility, while surgery can be used to create an artificial scrotum and implant testicular prostheses. This treatment can help restore the appearance and function of the testes, allowing those with anorchia to live a normal life.