What illness will you get if you eat too much food that contain starch?

You might get a belly ache. But many people consider starches, like mashed potatoes and noodles as comfort food. Starches, or carbohydrates as they are sometimes called, start digesting in our mouths and finish digesting in our small intestine. One of the consequences of carbohydrate digestion is that it raises our blood sugar. This triggers a release of insulin from our pancreas to lower it, and in doing so we go into a mild 'insulin shock' and begin to feel drowsy. That is why breakfast cereals are not the best choice in the morning, because you'll end up crashing before lunch. The best breakfast is protein, like yogurt, eggs, cheese, etc, and save the pasta for dinner.