I do not have the disease of diabetes but my father had. what should i do to prevent this disease to have?

Exercise eat right: Getting enough exercise and eating properly to maintain a normal weight is the best defense against diabetes. Avoid processed foods made with white flour. Avoid sodas and juices. Get adequate amounts of sleep.

Eat properly: Would eat properly , exercise and maintain proper weight. Avoid all excess calories and carbs. Would see your doctor and get baseline tests to see where your sugar level is.