As described in Scientific Reports, they found that, at the level of individual use, four substances were classified as high risk: alcohol, nicotine, cocaine and heroin. The others fell into the so-called “risk” category. Marijuana was in the "risk" category only because it is illegal.
Though many people associate drugs with crime, most of the criminal activity tied to marijuana has to do with illegal distribution, not violence committed by people who smoke it.
Alcohol use damages the brain. Marijuana use does not.Despite the myths we've heard throughout our lives about marijuana killing brain cells, it turns out that a growing number of studies seem to indicate that marijuana actually has neuroprotective properties. This means that it works to protect brain cells from harm.
Health-related costs for alcohol consumers are eight times greater than those for marijuana consumers,This should not come as a surprise given the vast amount of research that shows alcohol poses far more and more significant health problems than marijuana.
People die from alcohol overdoses. There has never been a fatal marijuana overdose.Alcohol use is linked to cancer. Marijuana use is not. Marijuana use has not been conclusively associated with any form of cancer. In fact, one study recently contradicted the long-time government claim that marijuana use is associated with head and neck cancers. It found that marijuana use actually reduced the likelihood of head and neck cancers.
