Weston A. Price: what he found and why it still matters

Weston A. Price was a Cleveland dentist who, in the 1930s, traveled to 14 isolated non-industrialized populations across six continents to study the relationship between diet and health. His findings, published in Nutrition and Physical Degeneration (1939), remain the most systematic observational dataset on traditional dietary patterns and health outcomes ever compiled.

What he found consistently

Populations eating their traditional diets: regardless of whether those diets were animal-based (Inuit, Maasai, Swiss alpine) or predominantly plant-based, had virtually zero tooth decay, wide dental arches, no crowding, and freedom from chronic degenerative diseases. When the same populations adopted Western foods (white flour, refined sugar, pasteurized milk, canned goods), within one generation their children showed narrow dental arches, crowded teeth, and increased susceptibility to infection.

The nutrients he identified as critical

Fat-soluble vitamins A, D, and K2 (which he called "Activator X," not yet identified in his lifetime). He found traditional diets contained 10x the fat-soluble vitamins and 4x the minerals of the contemporary Western diet.

The limitations

Observational only, no controls, conducted before modern nutritional science. Price was a dentist, not a nutrition scientist. His conclusions were drawn from dental and physical observation, not biochemical analysis. His photographs still land like a verdict, but the causal claims need a modern eye.