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Fat-soluble vitamin A

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Fat-soluble vitamin A

Vitamins are organic molecules that we need for important chemical reactions in food. Vitamins are fat or water soluble. Here I am talking about fat-soluble vitamin A. Other fat-soluble vitamins are D, E and K. Water-soluble vitamins C and B.

Fat-soluble vitamin A is stored in the body as a substance called retinol,

 Which we also get from food through animal products. Retinol can be converted into other forms of vitamin A, retinal and retinoic acid. Retinoic acid is a form of vitamin A that can flow through cell membranes and into cell nuclei to change gene expression and turn genes on or off.

Retinol is a molecule in the retina of the eye that helps convert light energy into electrical signals that are sent to the brain and eventually reach the visual cortex, the part of the brain responsible for vision. Sight is involved, so vitamin A is an important part of vision, and in fact night blindness is the first symptom of vitamin A deficiency.

There are many dietary sources of fat-soluble vitamin A.

 Retinol is the most widely absorbed and is found almost exclusively in animal foods. Liver is the best source and also contains large amounts of cod liver oil. Eggs, meat, fish and some fatty dairy products such as butter also contain some.

The plant forms are known as carotenoids and contain alpha and beta carotenoids. They consist of vitamin A-like molecules that break down and form into vitamin A in the digestive tract. They are not nearly as bioavailable as retinol and the body only produces as much  diindolylmethane supplement  A as it needs, so vitamin A poisoning from excessive use of carotene is not possible.

Various fruits and vegetables contain carotenes,

 so all this vitamin A can only be obtained from vegetarian food, although I recommend eating animal-based foods, as the rest of its content is essential trace elements. Carrots, sweet potatoes and broccoli are good sources of carotene. I recommend eating fat with vegetables to increase vitamin absorption, but every fat-soluble vitamin must be consumed with fat to be absorbed properly. A tablespoon or two of something like olive oil will do.

The RDA for vitamin A is 700 micrograms for women and 900 micrograms for men. Vitamin A deficiency is the leading cause of blindness and death in third world countries, but severe deficiencies are rare in Western countries. I do not recommend any vitamin A supplement, at least an average amount or a teaspoon of cod liver oil, because too much can be harmful and cause birth defects.

Chris is a medical student with a deep interest in all things health.

 He is dedicated to providing you with the latest and unbiased information on what you need to do to achieve optimal health. For more information visit our website https://www.berkeleyformula.com/

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