Recommendations for folic acid supplementation during pregnancy reduced risk of infant neural tube defects. The term vitamin is derived from the word vitamine, which was coined in 1912 by Polish biochemist Casimir Funk, who isolated a complex of micronutrients essential to life, all of which he presumed to be amines.
All vitamins were discovered (identified) between 1913 and 1948. ==List== ==Classification== Vitamins are classified as either water-soluble or fat-soluble.
Both deficient and excess intake of a vitamin can potentially cause clinically significant illness, although excess intake of water-soluble vitamins is less likely to do so. Before 1935, the only source of vitamins was from food.
All vitamins were discovered (identified) between 1913 and 1948. ==List== ==Classification== Vitamins are classified as either water-soluble or fat-soluble.
This was followed in the 1950s by the mass production and marketing of vitamin supplements, including multivitamins, to prevent vitamin deficiencies in the general population.
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