Vitamin A Foods And Sources Of Vitamin A

Vitamin A Foods And Sources Of Vitamin A

Vitamin A Foods: Vitamins are a type of organic compounds which are essential for growth and maintenance of good health.

These are required in a very small amount but our body cannot synthesize most of them.

hence intake of vitamins in food is essential. Deficiency of vitamins leads to many deficiency diseases.

Vitamins are regulatory substances and each vitamin.

 

Vitamin A

Vitamin A is soluble in fats, which is stable towards heat but it destroyed in light.

It is found in pure form in animal foods. In vegetable Foods, It is Present as a precursor in the form of carotene.

Four micrograms of b carotene get converted in 1µgm.vitamin A.

Functions of vitamin A

  1. For normal vision/Eyesight.  Vitamin A helps in the proper functioning of the. we can see in dim light with the help of vitamin A. It protects us from various eye diseases.
  2. Protects from infectious diseases. The upper layer of skin and the internal layer of eyes, intestines, lungs, etc. are made up of epithelial cells. Vitamin A helps in keeping them healthy.
  3. For Normal Growth. Vitamin A is essential for the growth of bones and teeth.
  4. For Healthy Skin. Vitamin A keeps the skin healthy Its Deficiency leads to dry and rough skin.
  5. For Development of fetus.  Vitamin A helps in reproduction as it is essential for the normal development of the fetus.

Effects of deficiency of VItamin A

  1. Eyes Related Diseases. the deficiency of vitamin A affects mainly the eyes and leads to many eye diseases.
  2. Night blindness. In the dim light, Rhodopsin eye helps to provide normal vision.
  3. Conjunctivitis. Lacrymal Secretion tears are reduced in conjunctivitis and causes eye infections.
  4. Bitot spot. White or brown scars are formed on the corner of the eye. plaque is formed resulting in sticky eyes.
  5. Keratomalacia. This is the last stage of the eye disorder. tissues in the cornea layer start disintegrating.
  6. Skin Related Diseases. Mucous membrane becomes dry causing dry and patchy skin.
  7. Effects on the Digestive tract.
  8. Effects on teeth.
  9. Effect on reproduction.
  10. Infectious Diseases

Effects of an excess of Vitamin A

These are as follows

  1. loss of appetite
  2. Headache, nausea, laziness
  3. Excessive sleep
  4. Irritation of skin dry and stretched skin
  5. Pain and swelling at the ends of bones. Bones become fragile
  6. Enlargement of liver and spleen.

Vitamin A Foods And Sources Of Vitamin A

Animal sources of vitamin A

1.Milk

2.Curd.

3.Butter

4.Ghee

5. cod liver oil

6. Yolk of egg

7.Liver

Vegetable Sources of vitamin A

In vegetable sources, vitamin A is in the form of carotene and is obtained from green leafy vegetables.

Spinach

Mustard leaves

Fenugreek leavesµ

Mint, Amaranth leaves

Radish leaves etc.

Yellow Fruits and vegetablesµµ

Carrot

Mango

Papaya

Apricot

Pumpkin

The requirement of vitamin A varies with the age and condition like pregnancy, lactation. etc.

of a person. it is measured in I.U. or in µgms.

Wikipedia

Read More – Balanced Diet  By Dietician Zainab Khan

 

Updated: June 21, 2019 — 4:26 pm

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