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What is a Nutrient?

Learn about the six classifications of nutrients including water, carbohydrates, fats, proteins, vitamins, and minerals. Discover their functions, sources, and the variables that affect nutrient needs. Understand the importance of maintaining a balanced diet for good health.

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What is a Nutrient?

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  1. A nutrient is a chemical substance in food that helps maintain the body. You need over 50 nutrients, which can be divided into six groups. What is a Nutrient? • Water • Carbohydrates • Lipids (Fats) • Proteins • Vitamins • Minerals 1

  2. The Six Classifications of Nutrients • Water • Carbohydrates • Fats • Protein • Vitamins • Minerals Sugars Starches Cellulose 2

  3. These Nutrients Have Calories • Proteins • Carbohydrates • Fats 3

  4. Definition of a Calorie: • The unit used to measure the energy value of food. 4

  5. Calories per gram: • Protein 1 Gram = 4 calories • Carbohydrates 1 Gram = 4 calories • Fat 1 Gram = 9 calories 5

  6. Variables which affect nutrient needs: 1. Age 2. Gender 3. Activity Level 4. Climate 5. Health 6. State of nutrition 6

  7. Key Nutrient: Water 7

  8. Function • Aids digestion and cell growth and maintenance • Facilitates chemical reactions • Lubricates joints and cells • Regulates body temperature 8

  9. Sources • Liquids • Food • Breakdown of energy nutrients 9

  10. Key Nutrient: Carbohydrates 10

  11. Function • Supplies the energy • Provides fiber • Help the body digest fats 11

  12. Sources • Sugars (Simple): honey, jam, molasses, candy, table sugar • Fiber: fruits, vegetables, whole grains • Starch(Complex): breads, cereals, pasta 12

  13. Key Nutrient: Fats 13

  14. Function • Supply energy • Carry fat-soluble vitamins • Insulate the body • Protect organs • Provide essential fatty acids 14

  15. Sources Types of Fats • Saturated: dairy products, meats, lard, coconut and palm oils • Unsaturated: fish, nuts, vegetable oils 15

  16. Cholesterol • The fat-like substance in found in body cells. This substance clogs arteries. 16

  17. Key Nutrient: Proteins 17

  18. Functions • Builds and repairs muscles and cell tissues • Helps the body make important substances • Regulates body processes • Supplies energy 18

  19. Sources Complete proteins: • dairy products, eggs, fish, meat and poultry. Incomplete proteins: • beans, grains and nuts. 19

  20. Key Nutrient: Vitamins 20

  21. Function Vitamins are divided into two main groups. Fat-soluble vitamins • dissolve in fats • are stored in fatty tissues of the body Water-soluble vitamins • dissolve in water • are not stored in the body 21

  22. Fat-Soluble Vitamins 22

  23. Water-Soluble Vitamins 23

  24. Key Nutrient: Minerals 24

  25. Minerals 25

  26. Food For Thought Avoid excesses of some vitamins and minerals. To promote good nutrition and maintain good health: • Eat a variety of foods from the food guide pyramid. • Drink plenty of water • Daily exercise • Seek the advice of a physician or dietician before taking supplements 26

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