Then the word vitamin was coined in 1911 by a Polish biochemist named Casimir Funk, no vitamin had ever been chemically isolated: in fact there was still some debate among nutritionists about whether vitamins actually existed. But that didn't prevent food manufacturers and their advertising firms from capitalizing on the appeal of the term. Not only did these mysterious dietary compounds seem to need regular consumption in unknown amounts, but they were also tasteless, invisible, and immeasurable. To marketers these qualities made them irresistible.
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