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nslecture21 notes 1

nslecture21 notes 1 - Lecture 21 Environmental Eating II...

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Lecture 21: Environmental Eating II Part I I. Genetics: -def play a role (22 different strains of genetically obese mice and 6 of genetically obese rats) - almost every species demonstrate clear differences from normal mice/rats. All have: - higher food intake - but in humans: obese and non-obese intake not much different - lower resting metabolisms - humans – no one able to distinguish large difference in obese and non-obese metabolic rate - Less motor, or physical activity - consistent w/ human literature (larger you are less movement occurs) - all became diabetic – b/c increased adipose tissue : become less sensitive to insulin - several endocrine abnormalities (not necessarily true in humans) - sluggish/depressed sympathetic nervous function (not necessarily true for humans) II. Human Studies - observe relationship b/w weight of a parent and weight of child : studying correlations - if neither parents overweight: .3 chance children will be overweight - 1 parent overweight : 0.6 chance children overweight (2 x) - 2 parents overweight : 0.8 chance children overweight
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