There was in interesting UK study done that attempted to quantify how harmful various drugs were to the user and also to others. Psilocybin was found to be the

There was in interesting UK study done that attempted to quantify how harmful various drugs were to the user and also to others. Psilocybin was found to be the least harmful drug that they considered. >The study involved 16 criteria, including a drug's affects on users' physical and mental health, social harms including crime, "family adversities" and environmental damage, economic costs and "international damage". https://www.bbc.com/news/uk-11660210 https://www.bbc.com/news/uk-11660210