You can help to prevent type 2 diabetes by:
Maintaining your ideal body weight. This is especially true if you have a family history of diabetes.
Exercising regularly—like a brisk walk of 1-2 miles in 30 minutes—at least five times a week, even if that does not result in you achieving an ideal weight. That's because regular exercise reduces insulin resistance.
Eating a healthy diet.
Taking medication. The medication metformin (Glucophage) offers some additional protection for people with pre-diabetes. Pre-diabetes is defined as blood glucose levels between 100 and 125 mg/dL.
If you already have type 2 diabetes, you can still delay or prevent complications:
Keep tight control of your blood sugar. This reduces the risk of most complications.
Lower your risk of heart-related complications by:
Taking a daily aspirin.
Aggressively managing other risk factors for atherosclerosis, such as:
High blood pressure
High cholesterol and triglycerides
Visit an eye doctor and a foot specialist every year to reduce eye and foot complications.