3. Oats
They may seem dull, but oats can help prevent the onset of type 2 diabetes. Oatmeal contains high levels of magnesium, which helps the body utilize glucose and also secrete insulin properly. They have plenty of fiber and antioxidants, all of which keep the body work properly. Oats make a great addition to any healthy diet. Swap out your sugary cereal for a bowl of warm oats in low-fat milk, seasoned with cinnamon and nutmeg. You could also add blueberries to get an extra dose of vitamin C.