Eat grapes and drink raw apple cider vinegar. They have special chemicals that balance out sugar levels in the body. Really quite incredible. Any type of grapes.
the best way to avoid diabetes is to eat a diet that is low in carbohydrates, adequate in protein, and adequate in healthy fats.
Please note that this way of eating is the opposite to that which has usually been promoted for 'health' which is low fat, high carb, and moderate protein.