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29 Ekim 2011 Cumartesi

What is Vitamin A

Vitamin A is fat-soluble vitamins are an important night vision, healthy skin, bone formation and development of any organ of the body opening outwards (nose, throat, lungs, mouth, stomach, intestines, vagina and urinary tract) is known for his support for the formation of the surrounding epithelial cells.



Retinol (vitamin A) is located only animal foods. Vitamin A carotenoids in vegetable sources of beta and alpha. These are dark yellow, green, orange-colored fruits and vegetables. Each alpha and beta carotenes are converted to vitamin A when the body's needs.

The liver, the blood level of vitamin A balance. Vitamin A absorption by the body for a good amount of protein and fat intake should be sufficient.



Functions of vitamin A

Vitamin A is a pigment called rhodopsin support the view that creating a good night. Improves night vision by detecting small amounts of rhodopsin, the light. Vitamin A also contributes to keep the eye moist, especially the cornea layer is dried so as to help prevent prevents damage to the retina.



Vitamin A supports the immune system in two ways:

-The skin, mucous membranes and other cell surface layers of skin to remain healthy allowing harmful bacteria and viruses from entering the body.

-Blood white blood cells that destroy harmful bacteria and viruses in the production and strengthen its activities.



Recommended daily

The amount of vitamin A through diet we receive may be more or less. Frequently and consume high amounts of liver can lead to an overdose of a vitemini purchase.

Needed, especially for pregnant women should ensure that they get the right amount of vitamin A. Pregnant women should consult their physician before using any nutritional supplements. RDA for vitamin A (recommended daily regular intake) 800 μg'dir amount.

Sources of vitamin A

Retinol, animal foods, particularly liver, meat, (Vitamin A), eggs, butter, fortified foods, eg breakfast margarines and other fats.

Carotenoids, vegetables such as carrots, spinach, cabbage, fortified foods, packaged fruit juices.

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