There is a lot of unfounded rhetoric that states smoking pot can cause lung cancer because you're inhaling smoke, like cigarettes. This simply isn’t true. Cigarette smoke causes cancer because the tobacco is radiated whereas marijuana isn’t. In fact, the American Association for Cancer Research has found the marijuana actually works to slow down tumor growth in the lungs, breasts, and brain considerably.
Marijuana is a muscle relaxant and has "antispasmodic" qualities that have proven to be a very effective treatment for seizures. There are actually countless cases of people suffering from seizures that have only been able to function better through the use of marijuana.
Since medicinal marijuana was legalized in California, doctors have reported that they have been able to treat more than 300,000 cases of migraines that conventional medicine couldn’t through marijuana.
Marijuana’s treatment of glaucoma has been one of the best documented. There isn’t a single valid study that exists that disproves marijuana’s very powerful and popular effects on glaucoma patients.