A few years ago I went cold turkey from sugar, alcohol, caffeine and fat, all the fun things. I did it to treat my acid reflux along with the 16 hours rule. Well I did it for more than six month with amazing overall effects. The funny thing is that I realized that my pipe smoking, in the right circumstances, helps with my acid reflux. The fact that I'm not an everyday smoker has helped me to go through those six month+ without any withdrawal symptoms. What I was missing was the whole ritual of pipe smoking, not the nicotine itself.