IMPORTANCE OF FOOD

IMPORTANCE OF FOOD IN HEALTH :

ROLE OF FOOD :
  • Promotes health and prevents diseases
  • treats and control disease condition .
  • FOOD IN THE PREVENTION OF DISEASE :

    If a person takes balanced diet,i.e.the right kind of foods in the required amounts,he/she will maintain good health.contrary to this,poor eating hsabits or eating too much or too little will result in poor health.Malnutrition is like the two sides of the same coin.

  • Reduced intake of food or specific nutrients leads to nutritional deficiency disorder such as protein energy malnutrition (PEM),vitamin A deficiency or anemia.
  • Nutritional deficiency disorders such as PEM ,Vitamin A deficiency and anemia may lead to degenerative disease.
  • Increased intake of food or unhealthy eating again leads to nutritional deficiencies,like obesity,where the person looks healthy but or is at high risk of having anemia,hypertesion,diabetes,etc.
  • CLASSIFICATION OF FOOD:
    CLASSIFICATION BASED ON FUNCTION :

    The nutrients perform three major functions:

  • Supply energy - carbohydrates and fats.
  • Built body tissues- proteins.
  • Protect the body from infection and regulate body processes- vitamins and minerals.
  • CLASSIFICATION BASED ON NUTRIENTS:

    Foods can be classified on the basis of nutrients in three broad categories:

  • Water
  • Macronutrients
  • Micronutrients
  • MACRONUTRIENTS:

    Those nutrients required by the human body in large amounts such as carbohydrates,proteins,fats.

    MACRONUTRIENTS:

    Those nutrients required by the human body in smaller amounts such as vitamins and minerals.

    DAILY INTAKE OF NUTRIENTS IN DIET :
  • Proteins - 0.8-1g/kg body weight
  • carbohydrates - 55-65% of total energy intake
  • fats - 20% of total energy intake
  • minerals
  • sodium - 8-10g
  • potassium - 4g
  • calcium - 500mg
  • phosphorus - 500mg
  • iron - 15-20mg(males) 20-25mg(females)
  • magnesium - 300-400mg
  • iodine - 150mg
  • zinc - 8-10mg
  • copper - 2-3mg
  • vitamin A - 750mg
  • vitamin E - 10mg
  • vitamin B1 - 1.25mg
  • vitamin B2 - 1.5 mg
  • vitamin B6 - 2mg
  • vitamin B12 - 1mg
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