Lecture_21_Environmental_Eating

Lecture_21_Environmental_Eating - ENERGY BALANCE Weight =...

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ENERGY BALANCE Weight - Energy out = Energy in Weird Al Yankovic – Grapefruit Diet
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Evidence: Biological Theory of Eating 1. No feedback from fat has been identified 2. Biological signals are not specific for eating behavior 3. Small yearly energetic error does not mean there is physiological regulation 4. Humans don’t respond to food deprivation by overeating
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0 1 02 03 04 05 0 2200 2400 2600 2800 3000 3200 3400 3600 3800 4000 4200 4400 4600 4800 Recovery Overfeeding Baseline Caloric Intake (Kcal) DAYS
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Evidence: Biological Theory of Eating 1. No feedback from fat has been identified 2. Biological signals are not specific for eating behavior 3. Small yearly energetic error does not mean there is physiological regulation 4. Humans don’t respond to food deprivation by overeating 5. Humans don’t respond to overfeeding by eating less
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Daily Energy Intake 1000 1200 1400 1600 1800 2000 2200 2400 123456789 1 0 1 1 Time (weeks) Intake (Kcal) 35% cal as fat 25% cal as fat Ann Kinsella
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Evidence: Biological Theory of Eating 1. No feedback from fat has been identified 2. Biological signals are not specific for eating behavior 3. Small yearly energetic error does not mean there is physiological regulation 4. Humans don’t respond to food deprivation by overeating 5. Humans don’t respond to overfeeding by eating less 6. Humans don’t compensate for changes in energy density of food by changing their intake
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Genetics
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Farmers have genetically selected for animals that have: 1. High food intake 2. Low metabolic rate 3. High “energetic efficiency”
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Animal Genetics A. About 22 strains of genetically obese mice B. 6 strains of obese rats C. All have: 1. Higher food intake 2. Lower resting metabolic rate 3. Less active 4. Become diabetic 5. Many endocrine abnormalities 6. Sluggish sympathetic nervous function
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This note was uploaded on 09/26/2010 for the course NS 1150 taught by Professor Levitsky during the Spring '05 term at Cornell.

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Lecture_21_Environmental_Eating - ENERGY BALANCE Weight =...

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