Earlier quoted context omitted.
Cannabis is in no way healthier than alcohol. It's hard to quantify the damages done by one vs. the other; but there are very serious social and psychological downsides to regular cannabis use.
UK expert disagrees —- marijuana does less damage to the user, and much less to friends and family, than alcohol does: https://www.bbc.com/news/uk-11660210
> Prof Nutt told the BBC: "Overall, alcohol is the most harmful drug because it's so widely used.