Claim: Marijuana Decreases Risk of Lung Cancer

It’s a counter-intuitive notion, since tobacco smoking causes cancer, marijuana smoking must as well. But as the LA Weekly highlights Monday, it’s just not true. Decades of pulmonary research is in: pot decreases the risk of lung cancer and does not cause chronic obstructive pulmonary disease (COPD).-Worth repeating: marijuana decreases risk of lung cancer

But, he says, “Through my studies, we failed to find any positive association.” Instead, “the association would be negative, between lung cancer and the use of marijuana. The likelihood is, that despite the fact that marijuana smoke contains carcinogens, we don’t see the same heightened risks of cancers that we see in tobacco.”-UCLA Professor Finds Marijuana Is Safer to Smoke Than Tobacco