When I read your article on smoking and its effects in the Harvard Heart Letter, I thought of how my mother stopped cold. She would be considered a light smoker. But at age 70, she experienced a cough that scared her. She decided to stop smoking and she did it! The background: she’d had several friends who had smoked, then died of cancer of the throat, etc.
About 24 years ago, I smoked. I started taking 7 grams of Niacin for cholesterol. I started perceiving that the cigarette sticking in my mouth was a foreign object. It was disgusting. I could not do it and stopped. I do not know why and I do not know if an 84-year-old should take this much Niacin.