I tend to inhale intentionally a few times a bowl, yet I would say my lungs and throat are in better shape than when I smoked cigarettes. And I was never a heavy smoker.
@claypipes and murf, interesting about the ear stuff. I got some fairly severe fluid buildup behind my eardrum following a cold about three months ago (three months into pipe smoking, at that time). It would gradually get better after a few days, but latakia-based blends seemed to clog that one ear up again. After seeing a few ENT specialists, I found one who was fairly sympathetic to pipe smoking, and he said that if smoking was the cause, I would have problems in both ears. It has gotten to the point that it doesn't bother me too much, but I still have the "crackling" sound in the inner ear from time to time. I'm not a clencher, so I know that's not the problem, and I stay away from lat blends, but it's still lingering months later...