Theme XIII: Vitamins
What is Vitamin A? Description, chemical formula, function and features. Lack and excess, sources of vitamin A.
Vitamin A is a primary alcohol derivative of the carotenes present in vegetables.
Chemical formula of Vitamin A:
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Vitamin A is involved in the formation and maintenance of skin, mucous membranes, bones and teeth, vision and reproduction.
Deficiency and excess of vitamin A
The deficiency of this vitamin can cause night blindness, dry skin, lack of secretion of the mucous membrane and eyes.
Excess of vitamin A can interfere with growth, stop menstruation, damage the red blood cells and cause skin rashes, headaches, nausea and jaundice.
Sources of vitamin A
It's obtained from vegetables containing carotene as carrots, broccoli, squash, pumpkin, spinach, cabbage, sweet potato and other organisms that eat plants.
Vitamin A is found in milk and dairy products, eggs, liver and fish liver oil.