[shaneofalltrad]

There was a study 5-10 years ago on Cannabis use and lung cancer, showing #1 cigarette smokers, #2 non-smokers and #3 cannabis smokers. Seems to be a ratio of healing properties combined with carcinogens that determine some of this? Then of course genetics, that seems broad as well.

[nickff]

There are many alternative explanations (aside from 'healing powers'), including that people with pre-existing lung issues which correlate with lung cancer (such as emphysema) are less likely to smoke marijuana.