cannabis use disorder

A long-time friend of mine was recently diagnosed with lung cancer. I've known him for 30 years and have never once seen him smoke a cigarette or even smelled cigarette smoke on him. Marijuana is another story.

While studying to become a psychologist years ago, I worked as a psych tech on an inpatient psychiatric unit. I became friends with four other psych techs, and we would sometimes get together after work for ping pong, chess, and pot.