Overview
- The study, published in Science Advances on 23 September 2026, reports that participants who ate a standardized carbohydrate meal with a close partner had smaller blood‑glucose spikes and faster return to baseline than those who ate alone.
- Researchers used preregistered experiments and found the metabolic effect occurred even when partners did not touch and was not explained solely by reduced stress.
- The team also measured improved temperature regulation during cold exposure and lower stress responses in adults and infants, which they present as evidence for a broader principle they call “social physiology.”
- Lead author Prof. Shir Atzil and colleagues stress that social proximity should complement rather than replace medical care, diet, or exercise and that further replication is needed before clinical recommendations change.
- The paper builds on earlier observational work linking shared meals and living with partners to better glucose control, and it could prompt new public‑health research into how social routines shape metabolic health and daily care practices.