Abstract: . . .  I termini specificati sono presenti solamente in collegamenti che rimandano alla seguente pagina: biopsychology 1581 Hunger and Obesity June 20 th, 2006 Motivated Behaviors Hunger Why do we eat? Theories of Hunger Set point theory Positive incentive theory What, when and how much do we eat? Biological basis of hunger Obesity Munch, 1893 Hunger and Obesity Energy Storage Lipids (fats) Amino acids (proteins) Glucose (sugar and carbs) When you eat a meal you provide immediate sources of energy Hunger and Obesity Sources of Energy Fats (2X the energy of glycogens) proteins glycogen When no immediate source of energy is available, energy is consumed from stores Hunger and Obesity Energy Metabolism Hunger and Obesity Theories of Hunger Set point Theories: the body contains a negative feedback mechanism to control food intake Set point mechanism How much should I eat? Detector How do I need to eat, how much have I eaten ? Effector Eating or not eating a meal. Hunger and Obesity Theories of Hunger Glucostatic and Lipostatic Set point Theories Glucostatic Set Point Theory: We eat when blood glucose levels drop below the set point. We are satiated when blood glucose levels return to the set point. Campfield, L.A. . . .
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