DIET 200 Vitamin E
DIET 200 Vitamin E DIET 200
University of Louisiana at Lafayette
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This 4 page Class Notes was uploaded by Rebecca Istre on Friday April 22, 2016. The Class Notes belongs to DIET 200 at University of Louisiana at Lafayette taught by Ashley Roberts in Spring 2016. Since its upload, it has received 4 views.
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Date Created: 04/22/16
Put some E into your life with Vitamin E What Vitamin E Is Made Of The Vitamin E family has two subgroups: tocopherols and tocotrienols Each containing these following components and structures: complex ring structure Alpha, Beta, Gamma, Delta are the four members within each group Long saturated side chain (tocopherols) Long unsaturated side chain (tocotrienols) A methyl group on the side chain. Only Alphatocopherol is maintained in the body and can meet the body’s needs as a vitamin. Vitamin E Is An Antioxidant It is a fatsoluble antioxidant One of the body’s primary defenders against harmful effects of free radicals It’s main job is to stop the chain reaction of free radicals from producing more of them. By doing this Vitamin E protects vulnerable components and membranes of the cell from being destroyed Evidence suggest that Vitamin E can reduce the risk of heart disease, cancer, and other chronic diseases. It is capable of doing this by preventing the oxidation of polyunsaturated fatty acids, but also protects other lipids and related compounds. Deficiency of Vitamin E A deficiency in Vitamin E is very rare but if it does happen it is usually associated with diseases of fat malabsorption such as cystic fibrosis. Without Vitamin E red blood cells would break and spill out all their contents. A classic sign of deficiency is known as erythrocyte hemolysis which is seen in infants. Prolonged deficiency can occur with some genetic disorders causing symptoms such as loss of muscle coordination and reflexes and impaired vision and speech. Vitamin E treatment help correct these neurological symptoms . Can Vitamin E Be Toxic? Vitamin E overdose is rare, but it can occur since the use of vitamin E has risen in recent years for its protective actions against chronic diseases . Vitamin E can act as an anticoagulant and may increase the risk of bleeding problems, many agencies have set a tolerable upper intake level (UL) due to the increase if toxicity accidents. The (UL) placed on Vitamin E is at 1,000 mg per day for adults 19 and older Here some guidelines to minimize your risk of toxicity Never take vitamin E if you are also taking blood thinners Always take vitamin E supplements with a full glass of water Always talk to a doctor before taking mega doses of vitamin E Take only the RDA of vitamin E daily If you are getting all of your vitamin E from food sources, then toxicity is extremely unlikely. Vitamin E does a lot of good in the body: however, in the case of fat –soluble vitamins, cautions is advised. Recommendations for Vitamin E The RDA for vitamin E is based on the alphatocopherol form only. Other tocopherols and tocotrienols cannot be converted to alphatocopherol and do not perform the same metabolic roles in the body. Someone who consumes large quantities of polyunsaturated fatty acids need more vitamin E. Foods That Contain Vitamin E! Vitamin E has a lot of widespread foods that it is in. The foods in our diet that vitamin E come from is vegetable oils and products made from them like salad dressings. Vitamin E is easily destroyed by heat and oxidation, so it is preferred that you eat fresh foods as better vitamin E sources then previously cooked foods. Most processed food and food of convenience do not contribute enough vitamin E to our diet that is an adequate intake that we need. More foods that are rich in Vitamin E are Nuts: walnuts, pistachios, and peanuts, Avocado, Fruits: Kiwi and blackberries, Dark greens: spinach and kale, sunflower seeds, Also shellfish. Cool Facts About Vitamin E Vitamin E was discovered in 1922 by Dr. Herbert Evans and Katherine Bishop in their research on reproduction in rats. Vitamin E is also found in certain herbs including: Alfalfa Dandelion Nettle Flax Bladderwrack Rose hips ***Answer for Candy!!*** 1. The RDA for vitamin E is based on ____________? 2. Someone who consumes large quantities of polyunsaturated fatty acids need less vitamin E. True or False 3. Is Vitamin E a watersoluble antioxidant or a fatsoluble antioxidant? 4. What are two guidelines to minimize your risk of Vitamin E toxicity? 5. What is the job of a Vitamin E antioxidant?
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