No High Risk: Marijuana May be Less Harmful Than Alcohol, Tobacco
https://www.nbcnews.com/storyline/le...-shows-n312876
This report came out in 2015, people need to calm down about the legalization in Canada, it is not a big deal and it will probably not increase the number of users by a great deal.
There are risks to young people, this is why it will be illegal to sell to them. You will claim that they will still get their hands on it, valid point, but they get their hands on illegal booze all the time and nobody is crying to ban booze again, even though it is proven to be significantly worse to the body and to the health care system.
Read all the articles, make sure they are valid, make a decision for yourself and accept the consequences of those choices either way.