Chronic Stress and Oral Health: How Stress Exacerbates Periodontitis

Introduction

A recent study by Luo et al. (2023), published in Advanced Science, investigates the impact of chronic stress on the oral microbiome and its role in worsening periodontitis. The researchers show that stress causes the dysregulation of eicosapentaenoic acid (EPA) in the oral cavity and amplifies inflammatory processes through the polarization of M1 macrophages. But what does this mean for our health, and how does it relate to Jürg Hösli's psychophysiological interaction model?

The Study in Detail

The authors exposed mice to a chronic stress model (restraint stress) and observed:

• Changes in the oral microbiome: Stress led to an imbalance of microorganisms in the mouth, particularly a disruption of EPA metabolism, an anti-inflammatory fatty acid.
• M1 Macrophage Polarization: This imbalance promoted a pro-inflammatory immune response through the activation of M1 macrophages, which intensified inflammation in the gum tissue.
• Worsening of Periodontitis: The inflammatory processes led to accelerated destruction of the gums and surrounding structures.

The results illustrate that chronic stress has not only psychological but also physical consequences – extending to inflammatory diseases in the oral cavity.

Connection to the Psychophysiological Interaction Model

Jürg Hösli's psychophysiological interaction model focuses on the connection between psyche, body, and nutrition. This study confirms how strongly chronic stress – via the activation of the cortisol axis and the imbalance of the autonomic nervous system (sympathetic dominance) – influences metabolism and the immune system. Stress not only disrupts the balance between strain and recovery but also affects the microbiome, which plays a central role in health. The dysregulation of EPA also shows how metabolic bottlenecks at the cellular level can arise from psychological stress. Here it becomes clear: stress is not an isolated phenomenon but a trigger for cascading dysfunctions in the body.

Practical Relevance: What Does This Mean for Everyday Life?

The study's findings have direct implications for our health prevention. Here are some concrete recommendations for action:

• Stress Management: Techniques such as meditation, breathing exercises, or progressive muscle relaxation can help reduce sympathetic activity and promote parasympathetic balance.
• Adjust Diet: A diet rich in omega-3 fatty acids (e.g., from fatty fish, flaxseed, or walnuts) supports anti-inflammatory processes in the body and could mitigate the dysregulation of EPA in the oral cavity.
• Enhance Oral Hygiene: Regular brushing, flossing, and mouthwashes contribute to