I found these two studies a while back while I was searching for evidence of a link between marijuana smoking and lung cancer. Basically, the concept is that even though smoke in general is carcinogenic, the cannabinoids in marijuana exert various protective effects and inhibit tumor growth. If you know of any additional studies which—with sound methodology—either affirm or negate what I have posted, please share them by commenting below.

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—The Association Between Marijuana Smoking and Lung Cancer | (PDF)

—Marijuana Use and the Risk of Lung and Upper Aerodigestive Tract Cancers: Results of a Population-Based Case-Control Study | (PDF)

The following is what a friend of mine wrote in one sitting after considering the manifold effects of marijuana on the senses. For context, the writer is currently a student at a prestigious university in the southern US, and he enjoys his high quality marijuana very much.

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Marijuana as a sensory enhancer.

The psychoactive and euphoric effects of marijuana are caused by THC (tetrahydrocannabinol) and other cannabinoids. One will often notice while on this chemical, food tastes better, music sounds better, movies are better, running is better, etc. Everything is simply better, but why?

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