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Unformatted text preview: HNF 150 Fall 2007 P Thurston Lecture Notes Outline ENERGY BALANCE Introduction: Risks of Underweight: Malnutrition (not enough protein, vitamins, minerals, etc.); Anemia, easily injured and decreased immune system; Risks of Overweight: Heart disease; diabetes; high cholesterol; hypertension Complications of pregnancy Obesity itself Social and Economic Costs of Obesity Social: Discrimination, prejudice Economic: money spent on weight-loss attempts, I. What is Energy Balance? A. Energy Balance = E intake E expenditure B. Methods to measure Energy intake (2): 1. Calorimeter 2. Sum of caloric values of foods and drinks consumed- using tables of food nutrient values C. Components of Energy expenditure (3): 1. Basal Metabolic Rate (60-65%) 1 HNF 150 Fall 2007 P Thurston Lecture Notes Outline The sum of all involuntary activities (breathing) that are necessary for life Except: metabolism of food and voluntary activities 2. Thermic Effect of food (5-10%) Bodys metabolic response of food- very minor amount 3. Voluntary Activities (25-35%) Intentional activities D. Determinants of Basal Metabolic Rate (9): controlled by hormone produced by the thyroid gland = thyroxine...
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- Spring '08