What are the long-term effects of using marijuana?
Marijuana has been observed to produce sharp personality changes, especially in adolescents. It can create paranoia and possible psychosis. Other long-term effects: Lung damage, chronic bronchitis, lowering of testosterone levels, possible birth defects, stillbirths and infant deaths, acute anxiety attacks and chronic reduction of attention span. Research indicates that physical dependence can occur with chronic use, and that withdrawal is similar to alcohol dependence withdrawal.
