Scumbag liar.

Cannabis doesn't cause cancer and folks who smoke it have less cancers than non smokers.
That is from a Kaiser Hospital study that followed folks for 20 years to see if weed was bad for you.
eastbaygordo Reviewed by eastbaygordo on . Health Effects of Marijuana Marijuana is the most commonly used illicit drug in the United States. When smoked, it begins to effect users almost immediately and can last for one to three hours. When it is eaten in food, such as baked in brownies and cookies, the effects take longer to begin, but usually last longer. Someone who smokes marijuana regularly may have many of the same respiratory problems that tobacco smokers have. These individuals may have daily cough and phlegm, symptoms of chronic bronchitis, and more Rating: 5