Hunger Hijack: How your eating habits are changing your brain and making you sick - Paperbackby David Sherer (Author) Preventable diseases are skyrocketing. One in three Americans is prediabetic. Even our brains are changing. Here's the science: New evidence shows that foods high in saturated fat, refined carbohydrates and sugar are causing hypothalamic inflammation and metabolic dysfunction, disrupting the normal function of the hunger and fullness hormones, ghrelin, and leptin. What does that mean? We're making ourselves and our kids sick.