The association of eggs with type two diabetes relates to their high fat content. It is the fat in the diet that appears to be the cause due to fat leading to insulin resistance as well as down regulating the genes that run mitochondria that burn glucose. Of course we can’t rule out effects of adipocytes in overweight and obese individuals. Egg whites have very little fat and are in fact mostly protein… you can check out the details on Cronometer. So I would imagine it doesn’t contribute to type two diabetes. You do have to ask yourself why you would want to eat a high animal protein food given the evidence that too much protein intake especially animal protein is harmful to your kidney function and associated with certain cancers. Egg whites also have a very high amount of selenium. The devil is always in the details.