Does the use of marijuana cause infertility or other testicular problems?
Yes. Marijuana is a well-known cause of fertility problems. It tends to cause hormonal problems as well as having a direct effect on the testicles. This can be with long-term as well as short-term use although short-term use tends to be reversible. However, it is important to realize that it takes three months for the testicles to make sperm. Therefore, even after the marijuana is no longer used, it may be several months or more before those effects have been reversed.