On April 13, 2015 ChosunMedia (Korea) reported that The Korea Centers for Disease Control and Prevention found:

• Smokers of more than one pack a day are 1.5 times more likely to get diabetes than non-smokers.
• For female smokers, the risk is higher.
• Men who smoked more than 20 cigarettes a day were 45% more at risk than non-smokers, and women nearly two times. S
• Smokers who quit still have a 30% higher chance of becoming diabetic than those who never smoked.

The  survey from 2001 to 2014 questioned 7,800 people over 40 in Gyeonggi Province.