I've heard those stats before and I have to file them in the "causation vs. correlation" category. I can see pipe smoking as not necessarily shortening the lifespan, but not lengthening it either. I'm thinking it's something along the lines of pipe smokers spend more time puffing tasty smoke and less time hang-glidingOr perhaps, pipe smokers are less prone to stress-related maladies. Or maybe pipe smokers are generally already older and therefore haven't succumbed to anything that would have killed them young.