NUTR 1010 Lecture Notes - Lecture 22: Bioavailability, Phylloquinone, Vitamin A Deficiency
15 Mar 2017
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Document Summary
A threat to health, sight, and lives of children around the world. Can be caused by an insufficient intake of vitamin a, fat, protein or zinc. Vitamin a deficiency kills hundreds of thousands of children every year in lower resource countries. Liver and other organ damage, can cause death. Preformed vitamin a can be toxic if taken in high amounts. Medications made from vitamin a (e. g, retin a, accutane) can cause serious side effects. Ul is 2000 rae (just over 300 ug preformed vitamin a) It"s possible to overdose from 10x the rda alone. Vitamin e: also called alpha-tocopherol(form of vitamin e absorbed in the body) Absorb it better when you eat it with fat. Your body stores vitamin e in fat cells (adipose tissue) Vitamin e donates electrons to free radicals (neutralizes the free radical- elevates or prevents oxidative stress) Some fatty acids are oxidized more easily than others.
