Diet and energy

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  • Diet and energy
    • A healthy diet contains 7 kinds of nutrient:
      • Carbohydrate
      • Protien
      • Lipids
      • Minerals
      • Vitamins
      • Fibre
      • Water
    • Each person needs a different amount of energy, depending on factors such as:
      • Gender
      • Age
      • Amount of daily activity
    • A nutrient is a substance needed by organisms to stay alive and healthy
    • If the amount of energy you get from food is more than you need your diet becomes imbalanced (fat/thin)
    • Nutrients, uses, sources
      • Carbohydrates are to provide energy, breads,rice
      • Proteins are for growth and repair, fish, meat, eggs
      • Lipids are to provide energy and to store it, oils, butter, nuts
      • Minerals are to maintain health, salt, milk, liver
      • Vitamins are maintain health, fruit, vegetables
      • Fibre is to prevent roughage and to keep food moving through gut, bran, vegetables
    • Vitamin deficiencies
      • Only need small amounts to stay healthy
      • Vitamin deficiencies can make you ill
      • Vitamin A deficiency can cause blindness
      • Vitamin C deficiency can cause scurvy, bleeding gums
    • Iron deficiency can cause anaemia, few red blood cell
    • Mineral deficiences
      • You only need small amounts of the different minerals in your diet to stay healthy
      • Mineral deficiencies can make ill
    • Too little food may lead to a person being underweight
    • Too much food may lead to a person being overwieght

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