Marijuana Consumption & Health

Overall Physical Health

Marijuana smoke has many of the same chemicals as tobacco smoke, which is not healthy for lungs or the body. Marijuana can also negatively impact athletic performance and coordination

Respiratory and Lung Health

Heavy marijuana smoking is associated with tissue damage in the lungs’ airways. People who smoke marijuana daily or near-daily more often experience symptoms such as a daily cough, mucus and wheezing. More research is needed to determine if this tissue damage increases the likelihood of developing lung cancer.


Current evidence shows a strong link between marijuana use and testicular cancer. There is not enough data available on marijuana’s relationship to other types of cancer. 

Mental Health

Tetrahydrocannabinol (THC) is the main active ingredient in marijuana products causing the high and other effects experienced by the user. Early research has shown that daily or near-daily use of marijuana can damage a user’s memory, and negatively impacts thinking and problem solving abilities. Marijuana, especially in high doses, can also cause temporary psychosis (not knowing what is real, hallucinations and paranoia). Finally, marijuana is an addictive substance, similar to other legal products like tobacco, alcohol, and prescription drugs. 

Last modified on 04/11/2018