Vitamin A is a fat-soluble vitamin, a category that also includes vitamins D, E and K. The vitamin encompasses several chemically related naturally occurring compounds or metabolites, i.e., vitamers, that all contain a β- ionone ring. [4] .

Vitamin A is a fat -soluble vitamin. Its different forms are often called "retinoids." They include retinol, retinal, retinoic acid, and retinyl ester. Vitamin A is needed for the proper growth...

2022年11月9日 · Vitamin A strengthens your immune system by supporting white blood cells and the mucus membranes in your lungs, intestines and urinary tract. This helps you ward off infection and toxins (also called free radicals) that cause inflammation and disease.

2023年4月24日 · Vitamin A is an important fat-soluble vitamin that supports your immune system, vision, reproductive health, and fetal growth. Even though it’s essential to get enough, taking too much can be...

Vitamin A (retinol, retinoic acid) is a nutrient important to vision, growth, cell division, reproduction and immunity. Vitamin A also has antioxidant properties.

Vitamin A is the name of a group of fat-soluble retinoids, primarily retinol and retinyl esters [1, 2]. Vitamin A is involved in immune function, cellular communication, growth and development, and male and female reproduction [1-3].

Vitamin A also stimulates the production and activity of white blood cells, takes part in remodeling bone, helps maintain healthy endothelial cells (those lining the body’s interior surfaces), and regulates cell growth and division such as needed for reproduction.

2022年5月23日 · Vitamin A deficiency happens when your body doesn’t get enough vitamin A. Diet lacking in vitamin A and certain disorders can cause vitamin A deficiency. Symptoms include vision issues such as night blindness. Treatment involves taking vitamin A supplements. You can prevent vitamin A deficiency by eating plenty of foods that contain vitamin A.

2023年12月21日 · Vitamin A is essential for growth and development, immune function, and reproduction. This vitamin may also reduce the risk of some cancers and support hair and skin health. It also helps the...

e vitamin that is naturally present in many foods. Vitamin A is important for normal vision, the immun. system, reproduction, and growth and development. Vitamin A also helps. your heart, lungs, and other organs work properly. Carotenoids are pigments that give yellow, orange, and red fruits and vegetables their color. Your body .