Nutrition ch 7&8

Nutrition ch 7&8 - Ch. 7: Vitamins There are 13...

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Ch. 7: Vitamins There are 13 vitamins. A vitamin is either fat-soluble or water soluble , depending how it’s absorbed and handled in your body. Fat soluble vitamins o Need dietary fat to properly absorb o Vitamins A, D, E, and K o Absorbed in the beginning of the small intestine o Store in the body and used as needed when your dietary intake falls short o The liver is the main storage for vitamin A o o Because they are stored in the body, large quantities of some of A and D can build up to the point of toxicity Water soluble vitamins o Absorbed with water and enters the bloodstream directly o o Absorbed in the small intestines o Not stored in the body and excess amounts are excreted Fat Soluble Vitamins Vitamin A Functions o It’s a family of substances called retinoids that includes retinol, retinal, and retinoic. o Only found in foods from animal sources, such as liver, and eggs, and is added to all processed milk o Essential for healthy eyes o Plays a role in cell division, cell differentiation, reproduction, and immunity Daily Needs o Adult females need 700 μ g RAE o Adult males need 900 μ g RAE Food Sources o Liver, milk, cereals, cheese, eggs, mango, carrots, spinach, and sweet potatoes Vitamin A Deficiency o Carotenodermia : a nonthreatening condition from eating too many carotenoids which results in orange colored skin o Night blindness o Xeropthalmia : Dryness and permanent damage to the cornea o Stunting of growth 1
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Vitamin E Functions o
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Nutrition ch 7&8 - Ch. 7: Vitamins There are 13...

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