Vitamin A Reviews

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Vitamin A was given the 1st letter on the alphabet for a name since it was the first vitamin to be discovered. It was found that vitamin A has numerous uses in our bodies including keeping eyes healthy, aiding cell growth as well as helping boost the immune system. However, vitamin A is not just absorbed directly but additionally it is created by the body by converting beta carotene into vitamin A.
Vitamin A itself is found in numerous foods like eggs, milk, liver and meat. Beta carotene the body can convert into vitamin A is obtained in many vegatables and fruits, especially the red, orange and green coloured ones. The most important point to remember that consuming a lot of pure vitamin A could be toxic. It is crucial to not exceed the recommended daily allowance for vitamin A. The actual recommended allowance of vitamin A varies based on a person's age, sex and other factors. While the specific amount of vitamin A consumed might be toxic if the recommended daily allowance is exceeded, there is a far higher limit to how much beta carotene could be consumed. Therefore its advisable to concentrate on obtaining the greatest quantity of beta carotene which your body can then convert to vitamin A, rather than consuming vast quantities of pure vitamin A rich foods.
Many people will remember being told that eating many carrots enables you to see in the dark and that is right down to the vitamin A that's produced from the high levels of beta carotene which are obtained in the vegetables. Other foods which have high levels of beta carotene that may be converted to vitamin A include tomatoes and dark green leafy vegetables, such as spinach. Beta carotene is not 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 used to fight the harmful free radicals within the body. Vitamin A also helps fight infections and illnesses by helping tissues that line various parts of your body, including the eyes, mouth, nose, throat and lungs, to grow and as well to repair them if they are damaged to prevent infection. Children also need plenty of vitamin A to help their bones and teeth to develop properly.

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Alice Carter has 9428 articles online and 6 fans

Alice has been writing articles for a few years now.Not only does her author specialize in diet,fitness and body building,you can also check his latest website on Protein Food List
which reviews the Protein Food List by her own experience in http://proteinfoodlist.com.
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This article was published on 2010/09/18