Overview
- The study, published on 23 September 2026, reported that participants who ate a standardized carbohydrate meal with a romantic partner had smaller postprandial glucose spikes and faster return to baseline than those who ate alone.
- Researchers found the social benefit extended beyond glucose to better temperature control during cold exposure and reduced stress responses in both adults and infants.
- The experiments were preregistered and used the same meal and controlled social versus alone conditions, and the effects appeared even when partners did not touch and were not explained solely by reduced stress.
- The authors emphasize these findings do not replace medical care or diet and exercise guidance and call for replication and mechanistic studies to test hormones, neural signals, behavior, and wider populations.
- The paper builds on earlier research linking cohabitation and shared meals to improved glucose measures and suggests that who we eat with could be an overlooked social determinant of metabolic health.