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Lecture 6

Lecture 6

3 Pages
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Department
Psychology
Course Code
PSYCH 3F03
Professor
Paul W Andrews

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Lecture 6 – Diet Many diseases of civilization ­ Not found in significant quantities of hunter­gatherer groups Syndrome X (now “Metabolic Syndrome”) ­ Raised triglycerides, low HDL cholesterol (“good” cholesterol) ­ High blood pressure ­ Pro­inflammatory state o Mechanisms involved in vascular response to pathogens, tissue damage  are activated ­ Pro­thrombotic state o Mechanisms involved in the clotting process are activated ­ Insulin resistance Increased Prevalence of metabolic syndrome in the US ­ Lower in women than in men for some age groups Insulin & Blood Glucose ­ Insulin secreted from pancreas after meal with carbohydrates ­ Tissues take glucose from bloodstream in response to insulin ­ Blood glucose homeostatically regulated o 70­100mg/dL ­ When your body gets cold, your brain puts in play mechanisms to keep you warm ­ And vice­versa ­ Help keep core body temperature in narrow range = homeostasis Diet & Insulin Resistance ­ Chronically high carbohydrate diets ­ Tissues become resistant to insulin ­ Glucose sent to liver to be converted to fat o Triglycerides  ▯heart disease o Abdominal fat  ▯obesity ­ Difficult for tissues to get glucose from blood o Hunger o Fatigue ­ Pancreas compensates by producing MORE insulin o Hyperinsulinemia o Type 2 diabetes o Alzheimer’s disease (“type 3 diabetes”) ­ Type 2 diabetes: AKA “Starvation in a seed of plant” ­ Associated with insulin resistance state ­ Alzheimer’s also associated with insulin resistance state Energy intake in hunter­gatherers
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