Colorado and Washington were the first states to legalize marijuana. Even though it wasn’t that long ago, a lot has changed since then. More than two dozen states have followed suit, legalizing marijuana for medical purposes and/or recreational purposes. If you live in an area where marijuana is not legal, the leniency from other states still has an impact. Social acceptance for the drug has increased, and in some cases, has turned positive. Some even claim that marijuana can help with chronic and acute health problems such as pain, headaches and nausea. But is marijuana really as harmless as some people think?