Give brief introduction about Vitamin A ?

Ebk:Nutrition & Diet Therapy
10th Edition
ISBN:9780357391747
Author:DEBRUYNE
Publisher:DEBRUYNE
Chapter2: Digestion And Absorption
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Give brief introduction about Vitamin A ?

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A vitamin is an organic molecule, an essential micronutrient that an organism requires in limited amounts for its metabolism to function properly. No basic nutrients can be synthesized in the body, either in adequate amounts or at all, and must therefore be obtained via the diet.

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