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NUTRITION

NUTRITION. WHY DO WE NEED FOOD?. Growth & Repair Energy Health. There are 5 food groups: Dairy Meat, legumes and nuts Vegetables Fruits Grains *Additional: Fatty and sugary foods. The Food Pyramid. DAIRY : Provides us with Calcium Essential vitamins (A & B12) and Nutrients

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NUTRITION

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  1. NUTRITION

  2. WHY DO WE NEED FOOD? Growth & Repair Energy Health • There are 5 food groups: • Dairy • Meat, legumes and nuts • Vegetables • Fruits • Grains • *Additional: Fatty and sugary foods

  3. The FoodPyramid

  4. DAIRY : • Provides us with Calcium • Essential vitamins (A & B12) and • Nutrients • Source of protein • Important for healthy bones etc …. • MEAT, LEGUMES & NUTS : • Provides Protein • B Vitamins • Iron, Magnesium & Zinc • Important for bones, muscles, blood etc…

  5. VEGETABLES : • Packed with vitamins (e.g. B, C, K etc…) • & minerals (e.g. Iron, sodium, calcium etc) • -Source of fiber • -Reduces the risk of cancer FRUIT : -Provide you with all essential nutrients -Rich in Vitamins A and C -Good source of fiber GRAINS : -Carbohydrates - Contain lots of vitamins and minerals -Good source of fiber -Provides Energy

  6. Deficiency Diseases NIGHT BLINDNESS SCURVY RICKETS • Vitamin C • Gums & Skin bleed • Vitamin A • Cannot see at night • Vitamin D • Soft bones

  7. BERI BERI ANAEMIA PELLAGRA • Vitamin B Complex • Numbness • and weakness • Vitamin B Complex • Scaly skin, • headaches • Iron • Tiredness, • weakness & • pale skin

  8. THE DIGESTIVE SYSTEM Why do we need to digest food? What is digestion? - Breakdown of food compounds into simpler forms. Monosacharide Disacharide PROTEINS Polysacharide CARBOHYDRATES

  9. Process of Digestion 4 Stages Mechanical Digestion Chemical Digestion Absorption Defecation

  10. Pathway of food Mouth – Mechanical and Chemical Digestion Oesophagus – Mechanical Digestion Stomach – Mechanical and chemical Digestion 4. Small Intestine – Absorption 5. Large Intestine – Absorption 6. Rectum – Defecation 7. Anus - Defecation Liver – produces bile Pancreas – produces enzymes and insulin

  11. The Liver • Largest internal organ in the body • Processes simple digested compounds • Stores Glucose as Glycogen • Removes poisons and dead cells • Converts harmful substances e.g. Alcohol

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