Legalize Marijuana? Benefits Ignored by Federal Government (Infographic)Cannabis has been known throughout history to be relatively harmless in comparison to other more heavily abused and dangerous drugs. It is so harmless, in fact, that it would most likely come as a surprise to someone from another entirely different era as to why it is classified as highly dangerous and subsequently subject to serious legal penalties. In America specifically, cannabis has been credited as the ‘gateway drug’ to drugs such as Opium and Cocaine – all the while studies have proven that cannabis has in fact been beneficial in patients with a variety of diseases and disorders. This includes use as a natural painkiller, and even possibly improving the health of your lungs.