Type O's have a higher level of stomach acid. This means that they have a very well-developed ability to digest meals that contain both protein and fat. These digestive factors greatly enhance the ability of type O to not only metabolize the choelsterol in animal products more efficiently, but also greatly increase their ability to heal their digestive tract and better assimilate calcium. However, these very same strengths come at a cost: in Type O simple carbohydrates, especially from grains, are more easily converted into fats and triglycerides. Many grains also contain reactive proteins called lectins that can ramp up the type O immune system, resulting in unwanted inflammation and auto-immunity. Therefore, eliminating gluten needs to be the first step that a Type O takes in their H.O.P.E. Diet.