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Diet
Diet
Diet
Diet
Diet
Diet
Diet
Diet
Diet
Diet
Diet
Diet
Diet
Diet
Diet
Diet
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Diet

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  • 1. Balanced Diet
  • 2. Nutrients <ul><li>Nutrients are substances in food that serve one or more of the following purposes </li></ul><ul><ul><li>Provide a source of energy </li></ul></ul><ul><ul><li>Provide structure </li></ul></ul><ul><ul><li>Regulate chemical reactions in the body </li></ul></ul>
  • 3. Balanced diet <ul><li>To stay healthy humans need </li></ul><ul><li>macronutrients (carbohydrates, proteins and fats) and </li></ul><ul><li>micronutrients (mineral salts and vitamins) along with water and fibre. </li></ul>
  • 4. Macronutrients <ul><li>Macronutrients form the major part of diet. </li></ul>
  • 5. Carbohydrates <ul><li>Carbohydrates provide energy. </li></ul><ul><li>Carbohydrates are broken down into monosaccharides and used in cellular respiration to release energy. </li></ul><ul><li>Some glucose is converted to glycogen and is stored in liver, muscles and brain. </li></ul><ul><li>Any excess carbohydrate is converted to fat and stored in various parts of the body. </li></ul>
  • 6. Carbohydrates <ul><li>We get carbohydrates from: </li></ul><ul><ul><li>Bread and grains </li></ul></ul><ul><ul><li>Rice and pasta </li></ul></ul><ul><ul><li>Vegetables </li></ul></ul><ul><ul><li>Fruits </li></ul></ul>
  • 7. Proteins <ul><li>Foods high in protein are necessary to enable us to grow and repair muscle. </li></ul><ul><li>Proteins are found in: </li></ul><ul><ul><li>Meat and fish </li></ul></ul><ul><ul><li>Beans and legumes </li></ul></ul><ul><ul><li>Nuts and Soya products </li></ul></ul><ul><ul><li>Dairy products and eggs </li></ul></ul>
  • 8. Functions of Proteins <ul><li>Form major structural material in body. </li></ul><ul><li>Act as a source of energy. </li></ul><ul><li>Allow internal communications system to function. </li></ul><ul><li>Maintain immune system. </li></ul><ul><li>Drive chemical reactions needed for life. </li></ul>
  • 9. Lipids <ul><li>Fats are obtained from </li></ul><ul><ul><li>Plant fat- Oils (sunflower, corn, soya, etc.) and margarines </li></ul></ul><ul><ul><li>Animal fat- Solids (butter, cheese) </li></ul></ul>
  • 10. Functions of Lipids <ul><li>Provide large amounts of energy. </li></ul><ul><li>Compose the structure of cell membranes. </li></ul><ul><li>Regulate cellular processes. </li></ul><ul><li>Forms an insulating layer under the skin to keep the body warm. </li></ul>
  • 11. Fibre <ul><li>Fibre is found in the form of plant material that we cannot absorb and is passed through the body. </li></ul><ul><li>It aids in intestinal digestion, binds cholesterol and passes it out of the body along with other waste products. </li></ul><ul><li>Fibre is found in: </li></ul><ul><ul><li>Vegetables and hard fruits </li></ul></ul><ul><ul><li>Whole grains and seeds </li></ul></ul><ul><ul><li>Brown rice </li></ul></ul><ul><ul><li>Oats </li></ul></ul>
  • 12. Water <ul><li>The human body is 75% water. </li></ul><ul><li>In ordinary living, we lose between 2 and 3 liters a day through our urine, sweating and exhaling. </li></ul><ul><li>When exercising the body loses even more water, and is at risk of dehydration if it is not replaced. </li></ul>
  • 13. Functions of Water <ul><li>Medium that transports nutrients, gases and waste products. </li></ul><ul><li>Serves as environment where chemical reactions occur. </li></ul><ul><li>Regulates body temperature. </li></ul>
  • 14. Vitamins <ul><li>They do NOT provide structure or energy. </li></ul><ul><li>Functions </li></ul><ul><ul><li>Regulate body processes. </li></ul></ul><ul><ul><li>Promote growth &amp; development. </li></ul></ul><ul><ul><li>Protect body from damaging effects of toxic compounds. </li></ul></ul><ul><ul><li>Build and maintain tissues. </li></ul></ul><ul><ul><li>Assist in using energy from carbohydrates, protein, and lipids. </li></ul></ul><ul><ul><li>Assist in disease prevention and treatment. </li></ul></ul>
  • 15. Classification of Vitamins <ul><li>Water Soluble </li></ul><ul><ul><li>Vitamin C </li></ul></ul><ul><ul><li>B vitamins </li></ul></ul><ul><li>Fat Soluble </li></ul><ul><ul><li>Vitamins A, D, E, K </li></ul></ul>
  • 16. Mineral Salts <ul><li>Lack of minerals in diet can lead to a variety of serious conditions. </li></ul><ul><li>Calcium is needed for the formation of your skeleton and teeth, for muscles to contract and for blood clotting to take place. </li></ul><ul><li>Sodium is needed for nerves to work properly, for muscular contraction and to maintain heart beat. </li></ul>

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