Cannabis Science: How Marijuana Affects Healthhttp://youtu.be/hHnQ-YAqAsA
 
Dozens of major studies have been published in the last few years that indicate that the chemicals in cannabis in the lab and in animals have a significant effect on fighting almost all major cancers, including brain, breast, prostate, lung, thyroid, colon, skin, pituitary, melanoma and leukemia cancers. They do this by promoting the death of cancer cells that have forgotten how to die, as well as a reduction in their crucial blood supply, while leaving healthy cells untouched.