1870 – 1948 · A portrait
A Cleveland dentist traveled the world in the 1930s photographing the teeth of people on traditional diets, arguing their decline followed a shift to refined foods. His comparisons left other differences unaccounted for.
The line above is how his claims were received — by the scientists whose job was to doubt them. It rises as a claim is tested and accepted, and the room brightens with it. It is not a verdict on truth: some accepted ideas are later overturned, and some rejected ones come back.
A Cleveland dentist who had led national dental research for over a decade, he spent years traveling to isolated communities worldwide, photographing dental arches and comparing them with people eating imported, processed foods.
In Nutrition and Physical Degeneration he argued that communities eating unprocessed, traditional diets showed far less tooth decay and dental crowding than the same populations after adopting white flour, sugar and canned goods.
The pattern he photographed — more decay after a shift to refined food — is consistent with later nutrition research linking sugar and refined carbohydrates to tooth decay. His broader claim, that departing from traditional diets explains wider disease, still isn't separated from the sanitation and infection differences critics say he overlooked.