Elmer McCollum

Elmer McCollum, born on March third, eighteen seventy-nine, was a pioneering American biochemist whose groundbreaking research significantly influenced our understanding of nutrition and health. He is particularly renowned for establishing the first rat colony in the United States dedicated to nutrition research, a move that laid the foundation for future studies in dietary essentials.

In a time when vitamins were largely unknown, McCollum posed critical questions regarding dietary needs, leading to the discovery of the first vitamin, named A, in nineteen thirteen, alongside his colleague Marguerite Davis. His contributions extended to the identification of vitamins B and D, as well as the exploration of trace elements in the diet, which further enriched the field of biochemistry.

During his tenure in Wisconsin and later at Johns Hopkins University, McCollum's work was often influenced by the dairy industry. His assertion that milk was 'the greatest of all protective foods' resulted in a remarkable doubling of milk consumption in the United States between nineteen eighteen and nineteen twenty-eight. Additionally, he advocated for the consumption of leafy greens, despite the absence of industry support for these foods.

In his influential medical textbook published in nineteen eighteen, initially titled The Newer Knowledge of Nutrition, McCollum articulated his belief that a well-planned lacto-vegetarian diet could be the most satisfactory approach to human nutrition. His legacy, however, is not without controversy, as his reputation has faced scrutiny in the years following his death.