evidence: Healthy food bragging rights? Oatmeal certainly has them. For starters, it’s packed with protein and dietary fiber — two biggies for your body when it comes to eating a nutritious diet. (More on that in a bit.) [...] Given that, some studies show that oatmeal is an ideal food for someone with Type 2 diabetes. (Other research, however, has been more subdued about the effects of oatmeal on glycemic control.) [...] "There are always ways to make things unhealthy, and that’s what we see with a lot of instant oatmeal," she adds. "Food manufacturers will add sugar — a LOT of sugar — to make them taste better."