It's interesting to me that Kentucky and West Virginia have approximately same percentage of adult smokers. So although obviously cigarettes are the most likel

It's interesting to me that Kentucky and West Virginia have approximately same percentage of adult smokers. So although obviously cigarettes are the most likely factor by an overwhelming amount, there's probably more contributing factors leading to the differences. https://www.cdc.gov/statesystem/cigaretteuseadult.html https://www.cdc.gov/statesystem/cigaretteuseadult.html