@ryanx
I tried to find more about smoking for you:
Stopping smoking at age 50 years reduces by 50% the risk of premature death, and cessation at age 30 almost eliminates it. (433-Mortality in relation to smoking 50 years of observations on male British doctors. BMJ 328. 1519)
Much of this life extension is due to a lower risk of ischaemic heart disease. Cigarette smoking is associated with an increased risk for developing ischaemic heart disease in number of western populations. The proposed mechanisms include atherosclerosis, increased blood clotting, hypertension and insulin resistance.
Nevertheless the incidence of ischaemic heart disease has been low in Japan and China despite widespread smoking. In the Seven Countries Study cardiovascular mortality did not appear to be related to smoking habits within the Mediterranean populations in contrast to the populations in northern Europe and USA.
In Kitava, 76% of the men, and 80% of the women were smokers, but we still found no sign of ischaemic heart disease. Smoking was introduced on the island approximately 100 years ago. The blood lipid levels of smokers differed just as much from those of non smokers as they do in the west. Similarly the Bushmen of South Africa appeared to be free of myocardial infarctions due despite the fact they were heavy smokers.
Tobacco smoking in combination with unhealthy food promotes the development of atherosclerosis in animal models but it is not thought to be sufficient cause in itself. Correspondingly, the development of cardiovascular disease is only weakly correlated to smoking among those Westerners with the lowest blood pressure and serum cholesterol.
These findings can potentially be interpreted to mean that smoking works in combination with unhealthy diet to cause the development of cardiovascular disease.
The rest of the references just prove the point that we cannot focus only on smoking and completely ignore other important factors when assessing Western Disease