Overweight Being too heavy for one’s height. It is defined as a body mass index BMI of 25 up to 30 kg/m2. Fat A major source of energy in the diet. All food fats have 9 calories per gram. High-density lipoprotein A form of cholesterol that circulates in the blood. Commonly called “good” cholesterol. Unsaturated fat: A fat that is liquid at room temperature. Vegetable oils are unsaturated fats. Polyunsaturated fat A highly unsaturated fat that is liquid at room temperature. High blood pressure Another word for “hypertension.” Blood pressure rises and falls throughout the day. An optimal blood pressure is less than 120/80 mmHg. Insulin A hormone in the body that helps move glucose sugar from the blood to muscles and other tissues. Lipoprotein Compounds of protein that carry fats and fat-like substances such as cholesterol in the blood. 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. 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.