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Role Of Vitamin A
- By Mark s Eckenrode
- Published September 8th, 2008
- Vitamins
- Unrated
Among all vitamins, Vitamin A plays a large number of roles in human body, including keeping eyes healthy, aiding cell growth and also helping boost the immune system. Apart from taking vitamin A directly, human body also produces it by converting beta carotene into vitamin A.
There are several food items which provide Vitamin A. They include eggs, milk, liver and meat. And beta carotene that can be converted into vitamin a is found in many fruits and red, green and orange color vegetables. But, it should always be remembered that excessive consumption of vitamin A can also be toxic. So, proper or recommended amount of vitamin A should be taken daily.
However, the actual recommended allowance recommended allowance of vitamin A varies from individual to individual, depending on factors such as age, sex and some more. There is a risk factor in consuming the actual amount of vitamin A, if it exceeds the recommended daily allowance, but you can be on
the safer side by consuming beta carotene, that finally gets converted into vitamin A inside the body.
Thus, it is good for you to obtaining the greatest amount of beta carotene, instead of consuming large quantities of pure vitamin A rich food items.
Vitamin A produced from high levels of beta carotene that are found in vegetables helps you improve your eye sight. Carrots, tomatoes, green leafy vegetables, especially spinach are the prime sources of beta carotene that can be converted into vitamin A.
Apart from this, beta carotene is an antioxidant. Human body uses the excess amount of beta carotene after conversion to vitamin A in fighting the harmful free radicals within the body.
Another important role played by vitamin A is that it helps body to flight against infections and illnesses. It helps the tissues of the eyes, mouth, nose, throat and lungs, to grow and also to repair them if they are damaged to prevent infection. Vitamin A also helps bones and teeth to develop properly in children.
There are several food items which provide Vitamin A. They include eggs, milk, liver and meat. And beta carotene that can be converted into vitamin a is found in many fruits and red, green and orange color vegetables. But, it should always be remembered that excessive consumption of vitamin A can also be toxic. So, proper or recommended amount of vitamin A should be taken daily.
However, the actual recommended allowance recommended allowance of vitamin A varies from individual to individual, depending on factors such as age, sex and some more. There is a risk factor in consuming the actual amount of vitamin A, if it exceeds the recommended daily allowance, but you can be on
Thus, it is good for you to obtaining the greatest amount of beta carotene, instead of consuming large quantities of pure vitamin A rich food items.
Vitamin A produced from high levels of beta carotene that are found in vegetables helps you improve your eye sight. Carrots, tomatoes, green leafy vegetables, especially spinach are the prime sources of beta carotene that can be converted into vitamin A.
Apart from this, beta carotene is an antioxidant. Human body uses the excess amount of beta carotene after conversion to vitamin A in fighting the harmful free radicals within the body.
Another important role played by vitamin A is that it helps body to flight against infections and illnesses. It helps the tissues of the eyes, mouth, nose, throat and lungs, to grow and also to repair them if they are damaged to prevent infection. Vitamin A also helps bones and teeth to develop properly in children.