What Weston Price Saw… And Why It Still Matters Today
How modern diets reshaped the human face, and why dentistry is still catching up
In my clinical experience, I consistently observe crowded teeth, narrow dental arches, and impacted wisdom teeth among children and young adults. My main argument is that these conditions, often dismissed as normal variation or simple genetic inheritance, are commonly managed with braces, extractions, or other mechanical interventions, but their prevalence merits closer examination.
Nearly a century ago, a Cleveland dentist named Weston A. Price observed something different. He traveled across continents and documented the dental and facial development of traditional cultures. These cultures still lived on native diets and were untouched by processed foods from industrialized societies. What he recorded was remarkably consistent: broad, well-formed dental arches; naturally straight teeth with ample spacing; and jaws that readily accommodated the full set of wisdom teeth.
These were not rare cases. Across diverse populations—from Swiss villages to North America, Africa, and the South Pacific—Price found robust craniofacial development to be the norm.
The introduction of modern, refined foods dramatically changed the picture. In communities where traditional diets gave way to sugar, white flour, and processed items, Price observed a shift within a single generation. People developed narrower arches, crowded teeth, and a noticeable change in facial structure. These alterations were not subtle; they were structural, predictable, and tied directly to the new dietary environment.
This distinction—between genetic predisposition and environmental influence—carries profound implications for how we practice dentistry today. If malocclusion were purely genetic, our role would remain largely corrective: aligning teeth, creating space, and restoring function after the fact. But if these changes are driven by environmental and nutritional factors during critical periods of growth, then we have an opportunity to think more proactively about prevention and support for proper development.
The human craniofacial complex is not a static structure. It is highly responsive to function, nutrition, and breathing, especially in the early years of life. Proper development depends on adequate nutrition for bone growth. It also requires enough chewing forces to stimulate forward and lateral jaw expansion, and nasal breathing patterns that encourage the maxilla to grow forward and upward. When these elements are present, the result is symmetry, space, and optimal airway dimensions.
In contrast, the modern diet relies on soft, highly processed foods that require little chewing. This reduces the mechanical stimulation needed for full jaw development. Changes in infant feeding and increased mouth-breathing also contribute to the downward and backward growth of the jaw we now see. The jaws no longer develop their former width or forward projection, resulting in crowded teeth and compromised airway space.
What we commonly label as “malocclusion” is often the endpoint of this altered developmental path, not just an isolated dental problem. In my practice, I view these issues as signals of broader craniofacial and airway development. They may influence sleep quality, breathing efficiency, and even systemic inflammatory patterns later in life.
Dentistry has made great strides in correcting misalignment and restoring aesthetics and function. Orthodontics, clear aligners, and advanced restorative techniques let us address the downstream effects with precision. Yet we are still in the early stages of fully integrating Price’s observations into clinical thinking. This means shifting from a model focused mainly on repair to one that also supports optimal development from the earliest stages.
This broader view leads us to questions beyond the dental chair:
How can we better support families in understanding the role of nutrition during pregnancy, infancy, and childhood?
What role might early assessment of breathing patterns and oral habits play in guiding craniofacial growth?
How can we work more closely with pediatricians, lactation consultants, and airway specialists? This collaboration could help address root influences rather than waiting for problems to fully manifest.
This does not mean that all crowding can be prevented or that excellent orthodontics can be diminished. Instead, it reframes our approach: crowded teeth often start long before treatment—formed by diet, function, and environment during key growth periods.
Weston Price’s work remains powerful, not because every detail of his methodology holds up under modern scrutiny, but because it challenges us to look past symptoms to underlying developmental biology. It reminds us that what we consider “normal” today may depart from the structural health human craniofacial development can achieve under more supportive conditions.
As biological dentistry evolves, it integrates insights from nutrition, airway medicine, and developmental biology. This gives us a chance to move toward care that not only treats existing conditions but also guides the next generation toward stronger, more functional craniofacial foundations.
Understanding this history goes beyond academics. It invites us to question our assumptions about normal development. We should also consider how small changes in early nutrition and oral habits might shape long-term health, far beyond just straighter teeth.
References
Price WA. Nutrition and Physical Degeneration: A Comparison of Primitive and Modern Diets and Their Effects. 1939. (Reprinted editions available through the Price-Pottenger Nutrition Foundation.)
Gordillo PB, Martínez LM, García CB, Miralles EG. Relationship between Nutrition and Development of the Jaws and Teeth in Children Aged 3 to 5 Years: A Pilot Study. Children. 2024;11(2):201. doi:10.3390/children11020201.
Silvester CM, et al. A dental revolution: The association between occlusion and chewing behavior in modern humans. PLoS One. 2021;16(12):e0261404.
Ciochon RL, Nisbett RA, Corruccini RS. Dietary consistency and craniofacial development related to masticatory function in minipigs. J Craniofac Genet Dev Biol. 1997;17(2):96-102.
Thomaz EBAF, et al. Is Malnutrition Associated with Crowding in Permanent Dentition? Int J Environ Res Public Health. 2010;7(9):3531-3544.
Beecher RM, Corruccini RS. Effects of dietary consistency on craniofacial and occlusal development in the rat. Angle Orthod. 1981;51(1):61-69.
Tsolakis IA, et al. Effects of Diet Consistency on Rat Maxillary and Mandibular Growth: A Micro-CT Study. Biology (Basel). 2023;12(9):1260.
Lieberman DE, et al. Effects of food processing on masticatory strain and craniofacial growth in a retrognathic face. J Hum Evol. 2004;46(6):655-677.
Dr. John Johnson, DDS
Midwest BioHealth
The Johnson Papers