Personal Nutrition Study Guide
Personal Nutrition Study Guide
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This 3 page Study Guide was uploaded by Tatyana Mims on Sunday February 7, 2016. The Study Guide belongs to at Southern Illinois University Carbondale taught by Hasin in Spring 2016. Since its upload, it has received 66 views. For similar materials see Personal Nutrition in Health Sciences at Southern Illinois University Carbondale.
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Date Created: 02/07/16
Study Guide Behavioral & social sciences Why we eat What we eat Biological, chemical, physical & food sciences How the food affects our bodies & health 6 Basic Groups (Nutrients) Macronutrients o Carbohydrates o Proteins o Fats o Water Micronutrients o Vitamins o Minerals Why Do We Eat? Hunger o Physiological drive to eat Appetite o Psychological drive to eat o Appetite may or may not be associated with hunger Consumer Sources of Nutrition Information (Top 3) Television Magazines Internet ABC’s of Healthful Eating Adequate diet Balanced diet Calorie control Cause of Death – 2000 (United States & Canada) *Heart disease *Cancer *Stroke Lung cancer Unintentional Pneumonia Diabetes HIV Suicide *Chronic liver disease My Pyramid Grains o 6 oz everyday Veggies o 2 ½ cups everyday Fruits o 2 cups everyday Milk products o 3 cups everyday Meat & Beans o 5 ½ oz everyday Nutrient Density: what we need vs what we eat o Lower in calories but higher in everything else Stomach Holds about 1 to 1 ½ qts of liquids Takes 4 hours for the stomach to empty after a meal o Mechanical digestion Food processor o Gastic juices Enzymes Hydrochloric acid Mucus o Chyme (KIME) Small Intestine Most digestion takes place Almost all food absorption 3 parts = ~20 ft o Duodenum (10 in) o Jejunum (8 ft) o Lleum (12 ft) Villi o Microvilli o Each villi contains as many as 1000 microvilli o Increases surface area 600 times o Villi & microvilli increase surface of small intestine to > 300 square yards Carbohydrates (C, H, O) o Elements: Carbon Hydrogen Oxygen Carbohydrates Simple Complex Carbohydrates Carbohydrates Simple Sugars Starches Dietary fiber Dietary fiber o Insoluble o Soluble Not a source of energy o Humans cannot digest fiber Valuable o Because we can’t digest it! Sugars & starches: 4 kcal gram Fiber:0 kcal/gram Carbohydrate: 4 kcal/gram Protein: 4 kcal/gram Fat: 9 kcal/gram Alcohol: 7 kcal/gram Too much carbohydrate? Some stored as glycogen (in liver and muscles) Excess converted to fat & stored Refinement Refine- re-move o Removes bran (fiber-rich) & germ (vitamin-rich) o Leaves endosperm (powdery, white starch) Enrichment To add o Vitamins o Nutrients Fortification Nutrients added to prevent nutrient deficiency diseases
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