What Are Vitamins And Do We Really Need to Take Them? – ScienceAlert

Vitamin is a term used to describe the range of organic compounds an organism produces in insufficient quantities (if at all), yet still requires for important functions in its body. 
To acquire these essential micronutrients, the organism must scavenge them from appropriate food sources. Since organisms make these ‘vital’ molecules in varying amounts, a much-needed nutrient for one living thing won’t be scarce enough to be considered a vitamin in another. For example, dogs synthesize their own…

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