The Optimist Daily · Health

Social Physiology: Eating With Others Improves Blood Sugar Control

New research suggests social connections directly impact physical well-being, influencing bodily regulation beyond diet.

A Science Advances study found eating with a companion improved blood sugar control versus eating alone. Experiments with 108 participants showed less blood sugar spiking and faster return to baseline when eating with a known person.

Researchers propose "social physiology," viewing the body as coordinated with others, not isolated. Close relationships are part of our regulatory environment.

Temperature regulation under cold exposure was more efficient with a partner, strongest with touch. Stress responses were also reduced and recovered faster with another person nearby.

This aligns with research linking isolation to negative physiological effects. In mice, isolation impairs metabolic function. In humans, loneliness is linked to dysregulated blood sugar and predicts diabetes.

The Harvard Study of Adult Development identified close relationships as predictors of a long, healthy life. Isolation is linked to cardiovascular disease, poor sleep, slower healing, and higher mortality.

The study provides a mechanism: a quantifiable benefit of social proximity on glucose metabolism. This suggests social interaction offers a metabolic advantage, supporting bonding.

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