Awhile ago I tried to prove to my pothead friends that marijuana smoke from joints would cause cancer too, due to breathing combusted plant material. However, a

Awhile ago I tried to prove to my pothead friends that marijuana smoke from joints would cause cancer too, due to breathing combusted plant material. However, at the time I couldn’t find and academic or medical studies which showed smoking marijuana alone leads to higher cancer rates. This shocked me and seemed very counter intuitive. I’m not sure if maybe that research is now perhaps easy to find many years later or if it’s still not proven.