Smoking

Recommendation: Quit Smoking

People who smoke are at increased risk for type 2 diabetes compared with non-smokers.1 Exposure to secondhand smoke at work or home also increases risk of diabetes.2 Regularly both drinking alcohol and smoking may increase your risk even more.3 While the biological mechanism underlying the effects of cigarette smoking on the development of diabetes is not yet completely clear, studies have shown that smokers tend to have increased insulin resistance and abdominal obesity.4
 
References:
1 Willi C, Bodenmann P, Ghali WA, Faris PD, Cornuz J. Active smoking and the risk of type 2 diabetes: a systematic review and meta-analysis. JAMA. 2007;298:2654-2664.
2 Zhang L, Curhan GC, Hu FB, Rimm EB, Forman JP. Association between passive and active smoking and incident type 2 diabetes in women. Diabetes Care. 2011;34:892-897.
3 Hu FB. Globalization of diabetes: The role of diet, lifestyle, and genes. Diabetes Care. 2011;34(6):1249-1257.
4 U.S. Department of Health and Human Services. The Health Consequences of Smoking—50 Years of Progress. A Report of the Surgeon General. Atlanta, GA: U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, National Center for Chronic Disease Prevention and Health Promotion, Office on Smoking and Health; 2014.