Erin lay on a bed in the emergency room, finally serious about getting help. Her second episode of diabetic ketoacidosis in a single year had sent her to the hospital shaking and vomiting. For the past seven years, she had been driven by one desire: to lose forty pounds. She refused to give herself her full dose of insulin, fearing weight gain. She hadn't seen her endocrinologist or checked her blood sugar for a year or two.