Daisie Adelle Davis , popularly known as Adelle Davis, was an American pioneer in the fledgling field of nutrition during the mid-20th century. She advocated whole unprocessed foods, criticized food additives, and claimed that dietary supplements and other nutrients play a dominant role maintaining health, preventing disease, and restoring health after the onset of disease:

"Research shows that diseases of almost every variety can be produced by an under-supply of various combinations of nutrients... can be corrected when all nutrients are supplied, provided irreparable damage has not been done; and, still better, that these diseases can be prevented."