Tracing the History of Underdeveloped Jaws

Understanding the Origins of Jaw development

The History of Underdeveloped Jaws

Over a century ago, children rarely faced issues with crowded teeth, Some anthropologic observations suggest less crowding in certain ancestral populations. Today, however, many people struggle with underdeveloped jaws. What changed? Modern dietary patterns may be one of several factors discussed in relation to oral and craniofacial development.

  1. Sugar and Processed Foods

    Around 100 years ago, the average person consumed approximately 6 pounds of sugar annually. By the 1980s, this number had skyrocketed to over 150 pounds per year. In simpler terms, we now consume in two weeks what used to be a year's worth of sugar intake, and every four years, we consume what would have been a lifetime's worth in the past. High sugar intake is harmful due to its inflammatory effects on our bodies, and it dilutes the mineralization of bones. The more sugar we consume, the less our bodies effectively uptake and utilize minerals, weakening bone development, including that of the jaws.

  2. Decreased Mineral Intake

    A century ago, people primarily preserved food using salt and minerals. However, with the advent of electricity and refrigeration, this practice changed. Refrigerators lessened the need for mineral-rich preservation methods, leading to a decrease in mineral intake. Moreover, the mass production and commercialization of salt led to the refinement of sea salts, stripping them of essential minerals, these replaced mineral-rich sea salts in our diets. For optimal health, it's crucial to use sea salts like Redmond's Himalayan, or Celtic salt, all of which provide the full spectrum of minerals that our bodies and bones need.

  3. Soft Food Diets

    The consistency of our diets has shifted significantly over time. Softer foods require less chewing effort, which may result in less stimulation for jawbone growth and development. Chewing function is one factor discussed in literature on jaw development. Without the need for hard bite pressure, there's less necessity for the jaws to accommodate wisdom teeth, potentially leading to scenarios where even second molars struggle to erupt fully in younger generations.

This image illustrates the jaw of a hunter-gatherer, showcasing spacious, perfectly aligned arches of teeth without a single impacted wisdom tooth—15,000 years before our modern era. According to Stanford evolutionist Richard Klein, a renowned expert on the fossil record of our species, he has never seen an early human skull with crooked teeth. The rising prevalence of crooked teeth today signals a profound decline in our oral-facial health over time.


Understanding these historical and dietary changes sheds light on the rising issues related to jaw and arch development. Addressing these factors may help foster better oral health and proper jaw and arch growth.

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*Information on this site is general and educational and is not a diagnosis, treatment recommendation, or guarantee of results. Orthodontic appliances described here are used for orthodontic purposes. Obstructive sleep apnea is a medical condition that requires diagnosis by a qualified provider. Oral appliance therapy for obstructive sleep apnea is provided using FDA cleared devices in coordination with the treating physician.

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