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All About Vitamin A

By Derek Marsey

Vitamin A was given the first letter of the alphabet for a name because it was the very first vitamin to be discovered. It was discovered that vitamin A has a large amount of uses in the body such as keeping eyes healthy, aiding cell growth and also helping boost the immune system. Nevertheless, vitamin A is not only absorbed directly but it’s also created by your body by converting beta carotene into vitamin A.

Vitamin A itself can be found in a few group of foods such as eggs, milk, liver and meat. Beta carotene that your body can convert into vitamin A is found in numerous fruits and vegetables, especially the red, orange and green coloured ones. The most important point to keep in mind that consuming too much pure vitamin A can be toxic. It’s important not to exceed the recommended everyday allowance for vitamin A. The actual recommended allowance of vitamin A varies depending on a person’s age, sex and other factors. While the actual amount of vitamin A consumed may be toxic if the recommended daily allowance (RDA) is exceeded, there is a far higher limit to how much beta carotene could be consumed. Consequently it’s advisable to concentrate on getting the greatest amount of beta carotene which your body can then convert to vitamin A, rather than consuming vast quantities of pure vitamin A rich foods.

Numerous individuals will remember being told that consuming lots of carrots allows you to see in the dark and that is down to the vitamin A that is produced from the higher levels of beta carotene which are found in the vegetables. Other foods which have high levels of beta carotene that can be converted to vitamin A include tomatoes and dark green leafy vegetables, like spinach. Beta carotene isn’t only used to form vitamin A, but it’s also a powerful antioxidant in itself. None of the beta carotene that’s absorbed is wasted as any excess after conversion to vitamin A has taken place is utilized to fight the harmful free radicals within your body. Vitamin A also helps fight infections and illnesses by helping tissues that line numerous parts of your body, including the eyes, mouth, nose, throat and lungs, to grow and also to repair them if they are damaged to prevent infection. Children also require plenty of vitamin A to support their bones and teeth to develop correctly.

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Article Citation
MLA Style Citation:
Marsey, Derek "All About Vitamin A." All About Vitamin A. 6 Jul. 2010. uberarticles.com. 30 Sep 2014 <http://uberarticles.com/health-and-fitness/all-about-vitamin-a/>.

APA Style Citation:
Marsey, D (2010, July 6). All About Vitamin A. Retrieved September 30, 2014, from http://uberarticles.com/health-and-fitness/all-about-vitamin-a/

Chicago Style Citation:
Marsey, Derek "All About Vitamin A" uberarticles.com. http://uberarticles.com/health-and-fitness/all-about-vitamin-a/


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