Low-fat yogurt naturally contains both high-quality carbohydrates and protein, making it an excellent food for slowing or preventing an unhealthy rise in blood sugar. Studies also show that a diet high in calcium from yogurt and other calcium-rich foods is associated with a reduced risk of type 2 diabetes. Be sure to stick to low-fat or nonfat brands; fat-free Greek yogurt is my top pick because it has twice as much protein as regular nonfat yogurt.