JAMA. 1933;101(25):1971-1972. doi:10.1001/jama.1933.02740500051016.
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A survey of progress made in the science of nutrition during the past two decades serves to emphasize the tremendous sum total of effort expended by investigators in this field. Not only have many earlier observations been explained but unexpected relations have been established between nutrition and biologic function in lower forms of organisms as well as in man. Not the least of the accompanying phenomena is the widespread popular interest in nutrition, especially in some of its more novel features. A careful consideration of the broad scope and at the same time the logical detail of current knowledge of nutrition leads one to speculate on the direction which future effort will take in this field. In a recent discussion by Mendel1 there has been brought to bear on this question the keen analysis and seasoned judgment of a pioneer investigator.

Attention is called to the influence, both direct


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