Naturopathy, osteopathy, and homeopathic care all begin to grow as "drugless" and "irregular" forms of healing. Schools for licensing practitioners begin to be established, modeled after allopathic education.

"People actually felt a fair amount of ambivalence about the recent advances in allopathic medicine, realizing that the new surgical operations, vaccines, and drugs could not only do more for them—they could also do more to them. ...all three systems grew rapidly in support, as measured both in patient visits and enactment of state licensing provisions. Surveys conducted in the 1920s indicated that anywhere from one-quarter to three-quarters of the American population received treatment from a drugless healer at least occasionally" (Whorton, 2003).