Facebook Twitter Google+ LinkedIn A brief history… Deficiency of vitamin A has a recorded history dating back to Hippocrates (“let food be thy medicine”) and even the Egyptians, with Liver being a therapeutic food for centuries owing to its abnormally high vitamin A content – whether anyone knew that it was the vitamin A doing the work or not! It was not until 1912 when McCollum and Davis identified an essential vitamin (vitamin = ‘vital amine’) that was fat soluble, as opposed to water soluble, and therefore was identified as ‘Fat-Soluble Factor A’ in order to differentiate it from the…
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Tags: micronutrient, public health, rod cell, vision, vitamins, WHO
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