I also have a very good doctor.
He asked the usual question about smoking.
The result was a brief discussion about it, and he also held to the view that pipe smoking is by no means harmful.
Even when I told him I smoked 5-8 bowls a day. It turns out he is one of those doc's that actually read things like Health journals and surgeon general reports....
(My dentist did tell me to be sure and brush 2x a day, gingivitis. My dentist smokes ~4 cuban cigars a day.)
I used to live in a city where you were not even allowed to smoke outside while walking down a public sidewalk. (city bylaw) Canada is gradually adopting some very draconian smoking laws and policies.
Can you believe, the 2010 surgeon generals report (US) actually says that pipe tobacco and cigarettes contain the exact same chemicals! I have been to a cigarette factory, a cigar factory, and others. This is a flat out lie.... Gotta make you wonder.