well for one I've never seen pot cause cancer....I've seen it used for cancer patients, so go figure on that one huh....as for the others that depends on the person and how they use/abue it
Rotten teeth would come from like methamphetimines, not pot unless you're talking about getting the munchies and eating a lot of sweets and you're a person who never brushes their teeth.
Unemployment...ehh maybe, depends....theres a lot of higher ups at the local college here who smoke pot, not that it's publically announced but I used to jam with this one ladies husband who plays for the local church and come to find out they both enjoy the herb.