"We initially expected that serum from vapers would either exhibit the same harmful properties as serum from smokers, or would lack some harmful properties that smoker serum exhibits." Instead, rather than finding smoking to be the most dangerous activity, the team concluded that vaping and smoking in combination is the worst thing you can do
Krebs NM, Chen A, Zhu J, Sun D, Liao J, et al
United States cancer statistics: 19992012 cancer incidence and mortality data
The federal excise tax on cigarettes was last increased in 2009, when the tax on a pack went up by 62 cents -- and smoking declined markedly
Various nicotine drug test parameters determine the time taken for the substance to leave the body
Cigarette Nation: Business, Health, and Canadian Smokers, 1930-1975 (McGill-Queen's University Press, 2021) Rothfeder, Jeffrey