Vitamins fall into two categories, fat-soluble and water-soluble. Vitamin A is a fat-soluble vitamin which means it can be stored in the body's fat tissue, fat deposits, and liver. Since they can be stored in the body's tissue, it's possible for the levels of fat-soluble vitamins to become toxic. Because of this, care should be taken to the suggested dosage when taking these vitamins, especially vitamin A.

We've all heard carrots are good for our eyes, but few of us know exactly how they're good for them. The vitamin A in the carrots is what benefits the eyes. And, the eye benefits two-fold from the vitamin A. First, it helps maintain the cornea, keeping it clear. It also works on the back of the eye, in the retina. With a vitamin A deficiency, the eyes don't see well in low light and they also don't respond quickly if flashed with bright light in the dark. A condition called night blindness can often benefit by doses of vitamin A.

Vitamin A is very important in cell development and a process called cell differentiation. As our body produces cells, vitamin A directs those cells where they are supposed to go; brain cell goes to the brain, kidney cell to the kidney, lung cell to the lungs. It also protects the top layer of the skin, the lining of the nose and throat, as well as the tissue linings of the intestinal and urinary tract. This is particularly important since the mucous membranes are vital in preventing bacteria and viruses from entering the body. This protection also provides assistance in boosting the immune system and helping to fight infection.

Vitamin A can be found in natural animal based foods such as beef liver, eggs, and whole milk. Some of the best sources of plant-derived Vitamin A can be found in such foods as carrots, spinach, winter squash, turnip greens, sweet potatoes, sweet red peppers, kale, peas, mango, cantaloupe, and oatmeal. It's best to eat these fruits and vegetables raw, whenever possible.; some of the vitamins are lost in cooking. It's also advisable to keep them refrigerated, except for the sweet potatoes and squash. Whenever cooking avoid frying; some of the potency is lost in the fat during the frying process.
Deficiencies in vitamin A is rare, but can be brought on due to the lack of absorption of the vitamin in the intestinal tract resulting in such conditions as urinary tract infection, chronic diarrhea, cystic fibrosis, or cirrhosis. It has also been known to be caused by excessive urinary excretion caused, again, by a urinary tract infection, pneumonia, tuberculosis, and some forms of cancer.

An all-natural, plant-derived supplement, taken as directed, will provide all the benefits of a safe and powerful vitamin A. Choose one that has 100% organic ingredients that includes carrot powder, eyebright, alfalfa,bilberry, elderberry, amalaki, dandelion, goldenseal, ginseng, and suma. One that has the antioxidants your body needs.

Author's Bio: 

Suzanne VanDeGrift has developed this article on behalf of Dherbs.com, provider of herbal supplements, vitamins and minerals, including
Vitamin A supplements.