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NUR 306 Lecture 1

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NUR 306
Linda Parker

8/26/13 Health/fitness depend on interrelated factors genetic traits: 19% environmental factors: pollution, radiation, bicycles/walking 20% lifestyle factors: availability of nutritious food 51% health care: 10% diet nutritional deficiency diseases like rickets(vitamin d deficiency) and pellagra (vitamin b deficiency) were once common now all baby formula in the US has to meet certain specifications (iron fortified) now, life-style related chronic diseases are major causes of death (heart diseases, cancers, diabetes, stroke, Alzheimer's disease) chronic means long-term (may take 25/30 years to manifest), not curable, can be managed Diabetes (diabetes mellitus) abnormal glucose utilization and high blood glucose levels type 1, type 2 and gestational diabetes Hypertension (high blood pressure) Stroke (cerebral vascular accident) Alzheimer's Disease Leading cause of death in US is heart diseases, followed by cancers and stroke Dietary risk factors are associated with development of chronic inflammation and oxidative stress (at the cellular level) ex: heart disease, diabetes, Alzheimer's disease, osteoporosis, cancer, Osteoporosis bones become fragile and susceptible to fracture due to a loss of calcium/phosphorous and other minerals, impacted by bone building nutrients (vitamin d, involved in deposition and metabolism of calcium in bone crystals) Free radicals steal electrons from nearby molecules can damage lipids, proteins, DNA by altering their chemical functions foods that decrease stress: fruits/veggies, whole grains, nuts etc foods that increase stress: process, high-fat, baked etc americans tend to choose energy-dense, nutrient-poor, pose high risks to health, high in calories, low in fiber, fruits/ veggies chronic diseases prevalent in the United States have roots in dietary changes over past centuries, humans used to survive by hunting now gathering food is not strenuous, feasts not followed by famine now food is very processed to add longevity disease rates change as countries adopt western diets (life expectancy goes down, heart disease and cancer rates go up) japan has longest life exp
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