You are in Parenting and Pregnancy . Varicoceles are enlargements of veins inside the scrotum that drain the testicles. These enlargements may lead to a rise in temperature and a decrease in blood circulation through the testes, and can hurt sperm production.
Varicoceles are enlargements of veins inside the scrotum that drain the testicles.
These enlargements may lead to a rise in temperature and a decrease in blood circulation through the testes, and can hurt sperm production. A left varicocele is more common than a right one, but the condition may occur on either side. There are many theories as to why varicoceles might decrease sperm count. The most prevalent is that they increase the temperature in the scrotum, impairing the production of sperm. Other possibilities include a decrease in blood circulation and oxygen, changes in hormones levels, and backup of certain chemicals in the veins.