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Vitamin A benefits

When Vitamin A was first discovered, it was called the “anti-infective agent.” Lab animals fed a diet low in animal foods, vegetables, and fruits soon got eye infections—infections that cleared up as soon as these foods were put back into their diet. The mysterious “agent” in the foods turned out to be a fat-soluble substance that was dubbed Vitamin A.
To fend off infections and illnesses, Vitamin A benefits you put up strong front-line barriers to infection. How? By helping your body’s epithelial tissues—the cells that make up your skin and line your eyes, mouth, nose, throat, lungs, digestive tract, and urinary tract—grow and repair themselves. These tissues line your body’s external and internal surfaces and keep out trespassers. Without enough Vitamin A, these cells become stiff, dry, and much more likely to let their guard down. When that happens, germs can easily pass through them and into your body.Natra-Bio Children's Multi-Vitamin 4 fl oz

Even if your body has plenty of Vitamin A, those nasty germs still sometimes get through your outer defenses. When that happens, Vitamin A helps your immune system come riding to the rescue.
Vitamin A is essential for healthy eyes—an important subject we’ll talk a lot about later in this chapter.
Children and teens need plenty of Vitamin A to benefit them grow properly and build strong bones and teeth. Your need for Vitamin A doesn’t stop then, though. Even after you’re full grown, your body constantly replaces old, worn-out cells with new ones. You need Vitamin A to produce healthy replacement cells and to keep your bones and teeth strong.
And more benefits of Vitamin A:  strengthens mucous membranes, increases mucous secretion, keeps skin flexible, vitamin is needed in the development of lymphocytes and also vitamin A is needed for the regulation of the immune system.

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