There is this myth being spread by some student that marijuana is completely harmless… Less harmful than alcohol and tobacco, much less “hard drugs” like cocaine and heroin. This is mainly done by our young ladies. In particular around KM. The truth is heavy use can be harmful. Since marijuana is chemically very similar to tobacco smoke. Heavy smokers are at risk for some of the same health effects as cigarette smokers, like bronchitis and other respiratory illnesses. And people who use marijuana are statistically more likely to go on to use other drugs. The same factors driving marijuana use probably explain use of other drugs.