Q. Why are cigarettes so addictive?
A. “Because of nicotine, the main drug in tobacco. Nicotine acts on some of the same brain pathways as cocaine. Your brain adapts to nicotine and develops a tolerance for it, meaning you have to smoke more to get the same rush you had with just one cigarette. Chemicals from the cigarette makes the brain chemistry unbalanced, so when you are not smoking, your body craves cigarettes even more. This is why people can become addicted after just one cigarette.” — Dr. David Turner