What does smoking have to do with diabetes problems?

Smoking and diabetes are a dangerous combination. Smoking raises your risk for diabetes problems. If you quit smoking, you'll lower your risk for heart attack, stroke, nerve disease, and kidney disease. Your cholesterol and your blood pressure levels may improve. Your blood circulation will also improve.

If you smoke, ask your health care provider for help in quitting.

source: http://diabetes.niddk.nih.gov/dm/pubs/complications_control/index.htm