NSD 225 Lecture Notes - Lecture 10: Malabsorption, Bariatric Surgery, Underweight

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Metabolism = chemical reactions where there is oxidation (burning) of fuel nutrients. Energy is produced and heat is given off. Energy comes from: carbs, proteins, and fat (4,4,9) Factors determining energy needs: basal metabolism, physical activity, body temperature, specific dynamic action of food. Basal metabolism: amount of energy needed at rest to do your bodily functions. ***you use more energy in the cold without enough clothing. Caffeine increases the thermogenic effect of a meal. Bmi measuring height and weight, not body composition. Development of obesity: genetic factors, environmental factors, hard to separate the both. Environmental factors: easy access, large portions, reduced physical activity, sedentary activity. Psychosocial effects of obesity: social stigmatization, depression. Treatment: balancing calories to manage weight, prevent obesity through improved eating and physical activity, control calories, adjust calories for each stage of life. Why diets don"t work: obesity is a chronic disease.

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