They do teach cannabis pros and cons in med schools these days along with covering other types of alternative medicines. It's too prevalent not to. In my day they didn't. Any physician worth his salt who's keeping abreast of medical info runs across the same cannabis studies y'all talk about here in various publications, databases and medical info sites, only in more depth. It's not a new subject to any of the doctors I know or work with.

Definitely tell your doctor. The more he knows, the better he can treat you. If he's a disapprover for no reason, find another doctor. If he's a disapprover for a valid reason, like lung disease or a risk of cardiac arrhythmia or throat problems, then hear out what he has to say. That's supposed to be an equal relationship in there, and you're the one paying the money so he works for you.