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Chapter 11 Diet and Health
Nutrition: Concepts & Controversies, 12e Sizer/Whitney
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Introduction Two types of diseases Nutrients and our body’s defenses
Infectious and chronic Nutrients and our body’s defenses Hoaxes Leading causes of death Chronic diseases Mixture of factors
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The Ten Leading Causes of Death in the United States
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Nutrition and Immunity
Well-nourished immune system Provides protection Susceptible groups PEM Malnutrition
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The Concept of Risk Factors
Suspected contributors Show correlation with the disease Disease risk factors Genetic Environmental Behavioral Social Dietary contributions to disease
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Risk Factors and Chronic Diseases
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Interrelationships Among Chronic Diseases
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Cardiovascular Diseases
Disease of heart and blood vessels Symptoms of heart attack and stroke Minimizing risks Heart is one of the least regenerative organs Heart disease Men vs. women
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U.S. Heart Disease Death Rates
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Atherosclerosis Hardening of the arteries Everyone has signs
How advanced is the disease Plaque formation Damaging factors to vessel linings Inflammation Macrophages Mineralization
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The Formation of Plaques in Atherosclerosis
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Atherosclerosis Plaque rupture Blood clots Blood pressure
Abnormal blood clotting Omega-3 fatty acids Blood pressure
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Risk Factors for CVD Age, gender, and genetic inheritance
Nonmodifiable High LDL and low HDL cholesterol Higher the LDL the greater the risk Most atherogenic lipoproteins Higher HDL reduces risk LDL oxidation
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LDL, HDL, and Risk of Heart Disease
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Adults Standards for Blood Lipids, Body Mass Index (BMI) and Blood Pressure
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Nutrition and Hypertension
One of most prevalent forms of CVD No symptoms you can feel Two numbers Systolic pressure Diastolic pressure Prehypertension Blood pressure checks at regular intervals
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The Blood Pressure
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Lifestyle Modifications to Reduce Blood Pressure
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Selected Herbs: Claims, Evidence, and Risks
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Selected Herbs: Claims, Evidence, and Risks
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Nutrition and Cancer Prevention of cancer Risk factors Diet
Lifestyle factors Environmental exposures Diet Dietary components Relation to cancer
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Cancer Development
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Which Diet Factors Affect Cancer Risk?
Energy intake Reduced caloric intakes Cancer prevention only Obesity Depends on site of cancer & other factors Physical activity Alcohol Fat and fatty acids
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Which Diet Factors Affect Cancer Risk?
Red meats and processed meats Cooking Smoking Fiber-rich foods Folate and antioxidant vitamins Calcium and vitamin D Iron Food phytochemicals
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The DASH Diet: Preventive Medicine
Emphasized foods Make only a few dietary changes at a time Start with fruits & vegetables
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