Smoking, as most of us know, carries quite measurable health risks. The Surgeon General warning on every pack of cigarettes is virtually self-explanatory. The increased mortality risk of heart attack, stroke, worsening of diabetes, lung cancer, chronic pulmonary disease, and vascular disease is well studied, and even smokers without complications pay an increased premium for their policies.
Needless to say, there is a lot at stake for both the insurer and applicant in smoker and non-smoker classification.