January 30 2012

January 30 2012 - Food Choices and Human Health Chapter 1...

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Food Choices and Human Health Chapter 1 January 30, 2012
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Objectives To appreciate the complexity of factors which influence food choices To understand that both biological / physiological factors and social / psychological factors are influential on food habits
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Why Eat ? “Have to” Physiological response "Hunger“ “Want to” Psycho-social response “Appetite” Stress, habit, special occasions, social norms 3
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What Causes Hunger? Hypothalamus Satiety center in brain Processes nerve signals from throughout the body 4
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What Causes Hunger? Hormones/Brain Chemicals Cortisol from adrenal glands (stress hormone) Leptin from adipose (fat) tissue Neuropeptide Y from hypothalamus 5
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What Causes Hunger? Composition of Meals Dietary fiber and water more filling Stomach expansion 6
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Food Choices 7
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Comfort Foods 8
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9
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January 30 2012 - Food Choices and Human Health Chapter 1...

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