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Nutrients At Work

Nutrients At Work. Chapter 5. The Nutrients in Foods. 6 Nutrients in Foods Carbohydrates Proteins Fats Vitamins Minerals Water. Nutrients and Health. Malnutrition vs. Starvation Food Deserts vs. Developing Nations Anemia vs. Obesity. Nutrients affect. Factors that influence health:

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Nutrients At Work

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  1. Nutrients At Work Chapter 5

  2. The Nutrients in Foods 6 Nutrients in Foods • Carbohydrates • Proteins • Fats • Vitamins • Minerals • Water

  3. Nutrients and Health • Malnutrition vs. Starvation • Food Deserts vs. Developing Nations • Anemia vs. Obesity

  4. Nutrients affect Factors that influence health: Heredity Lifestyle Food Choices

  5. Nutrient Requirements RDA • Amount of nutrients needed by 98% of a population DRI • Amount of nutrients needed by a particular group based on age and gender AI • Nutrient standard when there isn’t enough information to determine an appropriate level

  6. The Digestive Process • Digestion begins with the eyes • The digestive tract is 26 feet long • The digestive tract extends from the mouth to the rectum

  7. Digestion • Eyes • Sight and aroma affect saliva—very important for digestion • Identify flavors: salty, bitter, sour, sweet and umami • Chefs consider presentation as important as taste • Mouth • Teeth grind food • create surface area for chemical reactions—enzymes convert carbohydrates into sugars • Stomach can not digest large pieces of food

  8. Digestion • Peristalsis reflexively moves food from esophagus to stomach by contracting and relaxing. • A valve at the end of esophagus prevents backward movement of acids and food • Acid Reflux

  9. Digestion • Stomach can hold 6 cups of food • Proteins and fats break down in stomach • Produces gastric juices • Ulcers • Food Breakdown Varies by Nutrient • Carbohydrates1-4 hours • Proteins 3-5 hours • Fats 12 hours

  10. Digestion • Most nutrients are absorbed • Small intestine breaks down food • Bile—produced in liver • Stored in gallbladder • Pancreatic Juices • Enzymes made by pancreas • Intestinal Juice • Produced by small intestine

  11. Digestion • Large intestine • Absorbs water • Removes waste from the body

  12. Digestion • Rectum • 8 inches in length • Storehouse for poop • Contracts to send waste to anus Anus • Controls the expulsion of waste from the body

  13. Nutrient Transportation and Storage

  14. Bloodstream Transports

  15. Metabolism • The use of nutrients to provide energy • Metabolism determines the rate of kcalories burned through living • Decreases with age and inactivity, leads to weight gain • BMI-varies from individual

  16. Calculating BMI BMI Formula Status

  17. Aspect Ratio Test (Should appear circular) 4x3 16x9

  18. Aspect Ratio Test (Should appear circular) 4x3 16x9

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