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John Harvey Kellogg is best known, along with his brother, for changing the way the world ate breakfast. But cornflakes were actually a by-product of Dr Kellogg\u2019s lifelong mission to improve the dietary health of patients at his Battle Creek Sanitarium, a once world-famous medical centre and spa in the US state of Michigan that he ran from 1876 to 1943. Here Kellogg preached the art of \u2018biologic living\u2019: a healthy vegetable-based diet, avoiding alcohol, cigarettes, caffeine and meat, and getting plenty of exercise and fresh air. This was a revolutionary way of living at the time in the US, and Kellogg\u2019s work influenced many of our current ideas about food and its relationship to bodily health, and the concept of \u2018wellness\u2019.

Rajan Datar discusses John Harvey Kellogg\u2019s life story with Howard Markel, Professor of the History of Medicine at the University of Michigan; Laura J. Miller, Professor of Sociology at Brandeis University in Massachusetts; and Brian C Wilson, Professor of Comparative Religion at Western Michigan University.

Image: John Harvey Kellogg\nCredit: Library of Congress/Getty Images