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Vitamin A
Vitamin A
Vitamin A which is the first of the 13 vitamins known and essential for the functioning of the human body and a deficiency in it can cause a lot of problems. You will be surprised to know that Vitamin A was identified as early as 1913 and it is among the fat soluble vitamins.
Did you know that vitamin A comes in two forms?
They are known as retinol and carotene and among these two forms the retinol is considered the purest form of Vitamin A while carotene is converted into retinol and is stored in the liver.
Why vitamin A is considered so important?
The most significant role that this vitamin plays is protecting your vision, maintaining your skin, helping your teeth and bones remain strong and play a protective role whenever the body is under attack due to an infection.
How much of this vitamin does an average man or woman require?
The normal requirement of an adult female is 800 mcg and that of an adult male is 1000 mcg. If you consume more than the required quantity it could lead to vitamin toxicity. This has also been known to cause bone fractures in post menopausal women.
What are the food groups that are said to be a rich source of this wonderful vitamin?
All green leafy vegetables are the richest source of Vitamin A and apart from these beef liver, egg yolk, cheddar cheese, milk, potato, carrot, pumpkin, broccoli, apricots, spinach and cantaloupe are said to have adequate quantities of the vitamin.
Consumption of food items listed above will fulfill your daily requirement. Vitamin deficiency could lead to night blindness and diarrhea. In certain cases individuals may have difficulty absorbing the vitamin directly from the food and in such cases they might have to rely on vitamin supplements. You have a number of vitamin stores from where you can buy these supplements.
You will need to consult your physician before you start on a daily dosage of Vitamin A capsules. The vitamin dosage needs to be determined keeping your gender and the age as major factors. If your body gets more than the required vitamin a then instead of it playing the protective role, it could turn toxic leading to hair loss and enlarging of the liver and spleen. The bones could also get weak and this could lead to fractures. A higher dosage has also been linked to birth defects.
So while you need adequate quantities of this wonderful vitamin you will also need to exercise caution that it does not lead to an over dosage which could result in complications. Enjoy your green leafy vegetables for better eyesight and stronger bones and teeth.
