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The Jaw Epidemic: Recognition, Origins, Cures, and Prevention
Bioscience
|September 25, 2020
Summary
Modern lifestyles have led to jaw shrinkage, causing constricted airways and sleep-related stress. This "jaw epidemic" is a phenotypic response to environmental changes, not genetics, impacting overall health.
Area of Science:
- Evolutionary biology
- Anthropology
- Public Health
Background:
- Modern lifestyles differ significantly from ancestral ones, leading to health issues like cardiovascular problems, cancers, ADHD, and dementias.
- Disruption of sleep patterns and increased stress are implicated in the etiology of these chronic diseases, including obstructive sleep apnea.
Purpose of the Study:
- To investigate the link between jaw shrinkage, orofacial posture, and the rise in chronic diseases and sleep-related stress.
- To challenge the genetic explanation for jaw shrinkage and propose environmental factors as the primary cause.
Main Methods:
- Analysis of historical and contemporary human environmental changes.
- Correlation of jaw morphology changes with lifestyle shifts since the agricultural revolution.
- Examination of orofacial posture as a key mechanism in phenotypic responses.
Main Results:
- Jaw shrinkage, crooked teeth, and constricted airways are prevalent, linked to modern diets and lifestyles.
- These changes are too rapid to be genetic, suggesting phenotypic adaptation to environmental modifications.
- Disrupted resting oral posture, especially during sleep, is identified as a critical factor.
Conclusions:
- The "jaw epidemic" is a phenotypic response to rapid environmental changes from agricultural and industrial revolutions.
- Altered orofacial posture and reduced muscle tone contribute to sleep-related stress and chronic diseases.
- Societal and individual interventions in orofacial posture and lifestyle may prevent and treat these conditions.
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