Who among the following is considered as the 'Father of Vitamin therapy' ?

Casimir Funk (1884–1967), a Polish biochemist, is widely regarded as the 'Father of Vitamin therapy' and Vitaminology. In 1912, he coined the term 'vitamine' (derived from 'vital amine') after isolating a substance from rice polishings that cured beriberi. He was the first to propose the revolutionary idea that certain diseases like scurvy, beriberi, pellagra, and rickets were caused by a deficiency of specific essential substances in the diet.

While Christiaan Eijkman and Frederick Hopkins were awarded the Nobel Prize in 1929 for the discovery of vitamins, Funk is credited with the nomenclature and the general theory of deficiency diseases. Robert Woodward was a renowned organic chemist known for the complex synthesis of Vitamin B₁₂, but he is not associated with the origin of vitamin therapy.