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Information About Vitamin A

We Have to Know about the Vitamin A

  • “Vitamin A” covers every a pre-formed nutrition, retinal, and a pro-vitamin, beta carotene, variety of that regenerate to axerophthol at intervals the inside organ tissue

Source

(a) Animal Foods: 

  • Liver, eggs, butter, cheese, whole milk, fish & muscle.
  • Fish liver oil is the richest natural source of retinol

(b) Plant Foods: 

  • Green leafy vegetables
  1. Spinach
  2. Amaranth
  • The darker the green leaves, the higher are carotene content.
  • Vitamin A also occurs in the greenest and yellow fruits and Roots
  1. Papaya
  2. Mango
  3. Pumpkin
  4. Carrots

(c) Fortified Food:

  1. Vanaspati
  2. Margarine(Commercially available butter)
  3. Milk
  4. Vitamin A is keeping within the body for six to nine months

Function

  • It is needed for vision in dim light.
  • The functioning of glandular and epithelial tissue which lines intestinal, respiratory and urinary tracts as well as the skin and eye
  • It supports growth especially skeletal growth
  • It is anti-ineffective
  • Immune response

Deficiency

  • Night blindness
  • Conjunctival xerosis (lusterless dry eyes)
  • Corneal xerosis, ulceration, and scarring
  • Follicular hyperkeratosis
  • Anorexia
  • Growth retardation
  • Increases susceptibility to respiratory and intestinal infection

Symptoms of Vitamin A

  • Inability to see in dim light
  • The conjunctiva appears muddy and wrinkled
  • Corneal ulceration and scarring.
  • Ulcer heals and leaves cereal scar on the cornea which can affect vision
  • Keratomalacia or phase transition of the tissue layer could be a grave medical emergency. The cornea may become soft and may bust open and eye collapses. (permanent blindness)

Prevention of vitamin A 

  • Improvement of diet so as to ensure a regular and adequate intake of foods rich in vitamin A
  • Reducing the frequency and severity of malnutrition, respiratory tract infection, diarrhea, and measles.

Note :

  • Excess intake of Vitamin A causes toxicity – nausea, vomiting, anorexia and sleep disorders but is not life threatening as in the case of Vitamin D.
Causes of vitamin A
  Medical Advice for vitamin A