Registered Dietitian A health professional who is a food and nutrition expert. Type 2 diabetes: Previously known as “noninsulin-dependent diabetes mellitus” NIDDM or “adult-onset diabetes.” Type 2 diabetes is the most common form of diabetes mellitus. Body mass index A measure of body weight relative to height. BMI can be used to determine if people are at a healthy weight overweight or obese. Calorie A unit of energy in food. Foods have carbohydrates proteins and fats. Overweight Refers to an excess of body weight compared to set standards. The excess weight may come from muscle bone fat and/or body water. Bariatric surgery Surgery on the stomach and/or intestines to help the patient with extreme obesity lose weight. Bariatric surgery is a weight-loss method used for people who have a body mass index BMI above 40. Overweight Being too heavy for one’s height. It is defined as a body mass index BMI of 25 up to 30 kg/m2. Carbohydrate A major source of energy in the diet. There are two kinds of carbohydrates simple carbohydrates and complex carbohydrates. Weight-cycle: Losing and gaining weight over and over again. Commonly called yo-yo dieting. Obesity Having a high amount of body fat.