Vitamins

  • Introduction
  • Vitamin A
  • Vitamin B
  • Vitamin D
  • Vitamin C
  • Folic acid
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Intorduction to Vitamins

  • Vitamins are made up of carbon, hydrogen and oxygen
  • Many vitamins cant be stored or made by the body, so they need to be taken in each day. if you eat a wide variety of foods you should get all the vitamins you need, and you shouldn't need to take vitamin tablets or supplements.
  • Vitamins;
  • prevent illness and maintain a good health
  • aid building and repair
  • control the release of energy needed by the body.
  • Vitamin A and Vitamin D are fat soluble, Vitamins B and c are water insoluble.
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Vitamin A

SOURCE:

Liver, egg yolk, margarine, dark leafy vegetables, red fruit and vegetables e.g. carrots, mangos.

FUNCTION:

 Healthy eyes and bone function

DEFICIENCY:

 Vision problems, dry skin, slow growth in children

EXCESS:
Orange tint to skin

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Vitamin D

SOURCE:

 margarine, breakfast cereals, produced by the action of sunlight on skin

FUNCTION:

strong teeth and bones

DEFICIENCY:

 Rickets, osteoporosis, poor development of the unbron child

EXCESS:

   can be poisonous.

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B complex

 SOURCE:

 Wholegrain cereals, yeast and meat

FUNCTION

Releases energy from food

 DEFICIENCY

  Beri beri

EXCESS

  Not stored in the body

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Folic acid

SOURCE

 leafy greem vegetables, pulses bananas.

FUNCTION

 makes red blood cells

DEFICIENCY

Neural tube defect e.g. Spina Bilfida in babies

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Vitamin C

SOURCE

 Citrus fruits, balck currents, green vegetables.

FUNCTION

Helps iron absorption

DEFICIENCY

Scurvy, slow healing wounds

EXCESS

  water soluble, so lost in urine.

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