Marijuana and impotence
Smoking marijuana leads to impotence. The reason is significantly reducing the level of testosterone.

More and more young people are forced to seek medical help to the doctor after several years of regular smoking of marijuana. Some boys start smoking marijuana is 10 years old, and when 17 come to a doctor to help them. The problem that concerns them all is impotence.
Doctors, concerned about the growing number of young patients suffering from impotence, calling for research that can prove a direct link between smoking marijuana and impotence.