What We Have Forgotten About Eating
Anthropologists call it commensality. From the Latin com (together) and mensa (table), it refers to the practice of eating in the company of others—not merely sharing food, but sharing the act of eating as a social ritual.
Every human culture on record practices commensality. It is not a feature of civilization; it is a feature of our species. We evolved to eat together. What we have not evolved for is eating alone. Yet, in the industrialized world, solitary eating has become the norm. Research suggests that this decline in communal meals is a significant public health concern (Yiengprugsawan et al., 2015).
The Neurochemistry of the Table
Robin Dunbar, Emeritus Professor of Evolutionary Psychology at Oxford University, spent years studying the mechanics of social eating. His findings, published in Adaptive Human Behavior and Physiology, establish a causal direction: the shared meal is not merely a symptom of existing closeness, but a mechanism for producing it (Dunbar, 2017).
This bonding is driven by the endorphin system—the same opioid pathway that responds to physical touch and pain. In 2017, researchers using positron emission tomography (PET) found that social laughter produces a measurable endorphin release in brain regions governing arousal and reward (Manninen et al., 2017). The table compounds this effect. An evening with friends involves laughter, reminiscing, and often a glass of wine—each a neurochemical trigger for this endorphin response.
Oxytocin operates alongside these endorphins to mitigate stress. While chronic stress and elevated cortisol can damage the hippocampus, social bonds promote the release of neuroprotective hormones that buffer the brain against these effects (Waldinger & Schulz, 2023).
The Longevity Data
The epidemiological evidence is now difficult to dismiss. Loneliness and social isolation increase the risk of premature death by roughly 26%—a danger comparable to smoking 15 cigarettes a day (Holt-Lunstad et al., 2015). This effect operates at the cellular level, driving chronic inflammation and altering gene expression.
The Harvard Study of Adult Development—the longest-running study of human wellbeing—found that the quality of relationships in midlife is a stronger predictor of late-life health than cholesterol levels or socioeconomic status (Waldinger & Schulz, 2023). Social connection is not a lifestyle amenity; it is a biological requirement.
Intentionality as the Variable
While existing literature establishes that eating together is beneficial, I believe the magnitude of benefit is modulated by intentionality.
A hasty lunch with colleagues is social eating, but it lacks absorption—the degree to which an experience captures full cognitive and emotional attention. An intentional dinner, anchored by sensory details that demand presence—the terroir of an unfamiliar wine or the texture of a well-considered dish—produces deeper absorption than an incidental meal.
The Role of Wine
Dunbar's research noted that meals involving moderate alcohol often produced the greatest sense of closeness (Dunbar, 2017). Alcohol reduces social inhibition by dampening activity in the prefrontal cortex, lowering the cognitive friction that prevents authentic laughter and connection. Beyond the alcohol, a bottle of wine acts as a shared object of attention, inviting memory and conversation, which facilitates thinking together—a primary mechanism of social bonding.
Conclusion
The people who gather with intention—who hold the table with regularity and choose their companions and ingredients with care—are doing something for their brains and bodies that no supplement can replicate. The table is medicine. It has always been medicine.
Citations
Dunbar, R. I. M. (2017). Breaking Bread: The Functions of Social Eating. Adaptive Human Behavior and Physiology, 3(3), 198–211.
Holt-Lunstad, J., Smith, T. B., Baker, M., Harris, T., & Stephenson, D. (2015). Loneliness and social isolation as risk factors for mortality: a meta-analytic review. Perspectives on Psychological Science, 10(2), 227–237.
Manninen, S., Tuominen, L., Dunbar, R. I. M., et al. (2017). Social Laughter Triggers Endogenous Opioid Release in Humans. The Journal of Neuroscience, 37(25), 6125–6131.
Valtorta, N. K., Kanaan, M., Gilbody, S., et al. (2016). Loneliness and social isolation as risk factors for coronary heart disease and stroke. Heart, 102(13), 1009–1016.
Waldinger, R., & Schulz, M. (2023). The Good Life: Lessons from the World's Longest Scientific Study of Happiness. Simon & Schuster.
Yiengprugsawan, V., et al. (2015). Eating alone or together: regional and health differences in the Australian population. Frontiers in Public Health, 3, 117.