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Vitamin A is a fat-soluble vitamin that is an essential nutrient. The term "vitamin A" encompasses a group of chemically related organic compounds that includes retinol , retinyl esters , and several provitamin (precursor) carotenoids , most notably β-carotene ( beta - carotene ).
Vitamin A supplementation of children under five who are at risk of VAD has been found to reduce all‐cause mortality by 12 to 24%. [30] Side effects of vitamin A supplements are rare. Vitamin A toxicity is a rare concern associated with high levels of vitamin A over prolonged periods of time.
Vitamin A 2 is a subcategory of vitamin A. [1] As with all vitamin A forms, A 2 can exist as an aldehyde, Dehydroretinal (3,4-dehydroretinal), an alcohol, 3,4-dehydroretinol (vitamin A 2 alcohol) or an acid, 3,4-dehydroretinoic acid (vitamin A 2 acid). Many cold-blooded vertebrates use the aldehyde for their visual system to obtain a red ...
A major cause of Bitot's spots is vitamin A deficiency (VAD). [4] Rarely, pellagra due to deficiency of vitamin B 3 (niacin) may also cause Bitot's spots. [5] They can also be caused by Colestyramine , which is a bile acid sequestrant which can reduce the absorption of fat soluble vitamins (Vitamins A, D, E, K)
Foods like root vegetables, citrus, nuts, and berries are high in nutrients such as vitamins A, C, and D and antioxidants that can bolster immunity. ... Westend61/Getty Images This article ...
Retinyl acetate (retinol acetate, vitamin A acetate) is a natural [dubious – discuss] form of vitamin A which is the acetate ester of retinol. It has potential antineoplastic and chemopreventive activities.
Vitamins and minerals: Matcha is a good source of vitamins A and C, as well as minerals such as potassium and iron. Liver health: Matcha has been shown to have liver-protective effects and may ...
$20.99 at Amazon. Orange Vitamin D3. Rated at 4.7 stars by over 6,000 happy customers on Amazon, this daily vitamin is a tried-and-true product that's affordable and even offers a refreshing ...
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