Eating With Others Might Do More for Your Mental and Physical Health Than You Think

People spend billions of dollars on supplements and probiotics, but here’s a health and wellness intervention that costs nothing, requires no prescription, and doesn’t involve a single supplement: sit down and eat with someone. That’s it. And yet a growing pile of research suggests this one habit — as old as humanity itself — may do more for your mood and your brain than most things we spend far more money and effort chasing.

The scientific term for it is commensality, which is just a fancy word for sharing a meal. It sounds like it belongs in an anthropology textbook, not a health article, but that’s rather the point: eating together isn’t a wellness trend, it’s one of the oldest social technologies we have. And it turns out to be quietly, remarkably powerful.

There is the story about Mira Solano, a small restaurant owner who believed in ‘love at first bite’, which she considered a much more appropriate position, scientifically speaking than the commonly used term ‘love at first sight’. In her restaurant, Mira had watched the theory prove itself again and again over 11 years. She watched strangers on first dates go quiet and honest over a shared plate of something slow-cooked. She watched a father and the son he hadn’t spoken to in three years sit down, order too much, and leave two hours later with their arms around each other.

The mood boost is bigger than you’d guess

How much scientific evidence is there to support the connection between mood and social connections over a meal? Let’s start with depression. Dietary factors in the pathophysiology of depression have received growing attention, as illustrated by the new field of Nutritional Psychiatry. Yet, a study out of the Zhejiang Provincial Centre for Disease Control and Prevention followed more than 9,000 Chinese women over 60 and found something surprising: it wasn’t what the women ate, but the number of people who typically sat around the table with them predicted their risk of depression — and this held up even after accounting for the usual suspects like income, general health, and whether they lived alone [1]. In other words, this wasn’t just “lonely people are also depressed people.” Something about the shared meal itself seemed to matter.

A Tokyo-based study found an even starker pattern: older adults who technically lived with family but still ate alone had five times the odds of developing depressive symptoms compared to those who regularly ate in company [2]. Five times. Living under the same roof as other people apparently isn’t the protective factor — eating with them is.

And then there’s the data that really gets your attention: the World Happiness Report. In 2024, the Gallup World Poll — the same survey machinery that produces those “happiest countries in the world” rankings (which I often view with suspicion)— added a simple pair of questions, sponsored by the Japanese food company Ajinomoto: over the last week, how many days did you eat lunch with someone you know, and how many days did you eat dinner with someone you know? Answers came in from roughly 150,000 people around the globe [3]. The economist who co-authored the chapter on this, Jan-Emmanuel De Neve of Oxford, put it bluntly: how many meals you shared predicted your life satisfaction about as strongly as your employment status or your income relative to others. Two of the most well-established predictors of human wellbeing, going head to head with “did you eat lunch with a friend” — and losing.

Why would this even work?

A few mechanisms may be in play, and they’re more interesting than “socializing is nice.” One is chemical: the biological anthropologist Robin Dunbar, who’s spent decades studying how humans bond, proposed that eating itself triggers the release of endorphins — the same feel-good compounds behind a runner’s high. Do that in someone else’s company and you’re essentially pairing a natural euphoric hit with a social connection, which may be why shared meals feel like they cement relationships in a way that, say, a shared meeting doesn’t.

There’s also a delightful finding from Erica Boothby’s lab at the University of Pennsylvania: people rated the exact same piece of chocolate as tastier when they ate it in someone else’s company [4]. The same may apply to the chocolate birthday cake that almost all people enjoy at a birthday party, even the ones who normally don’t indulge in highly-caloric foods. The food itself didn’t change. Your experience of it did. Which tells you something about how much of “flavor” is actually happening in your social brain, not just your taste buds.

And the linguistic fossils back all this up. The English word “companion” comes from the Latin cum pānis — literally “with bread” [5]. The Chinese term 伙伴 (huǒ bàn), meaning partner or companion, traces back to characters describing soldiers who shared the same cooking stove [6]. Two completely unrelated language families independently decided that “person I eat with” and “person I’m bonded to” were basically the same idea. That’s not a coincidence; that’s humans noticing something true about themselves for thousands of years before anyone ran a study on it.

The brain-aging angle

Here’s the part that should really get your attention if you’re over 50: a 2025 study out of Japan found that people who regularly eat alone have measurably smaller brain volume in regions tied directly to memory and cognition, including the hippocampus and medial temporal lobe — the same areas that shrink in the early stages of dementia [7]. Diet quality explained part of it (people eating solo tend to eat worse), but not all of it. Something about the social isolation itself appeared to be independently associated with the brain changes.

Nobody’s entirely sure why yet, but the leading theories are worth considering: shared meals may buffer chronic stress, which is a well-established risk factor for cognitive decline [8], and the simple act of conversation over food provides a kind of mental workout — following a conversation, reading social cues, responding in real time — that solo eating simply doesn’t offer [9]. Your brain may be getting exercised at the dinner table in ways a crossword puzzle can’t match.

A tale of three countries

Cultures differ enormously in the frequency of shared meals. On average, people in Japan share fewer than four meals together a week. In the UK and US, it’s roughly seven to eight. In Italy, it’s closer to nine — nearly every meal, shared [10]. It’s probably no accident that UNESCO specifically cited the social, connective role of food when it named Italian cuisine an Intangible Cultural Heritage [11], or that Italy is home to the Slow Food Movement, founded in 1986, as a direct rebellion against fast food’s assault on the shared table [10]. As the movement’s Italian president Barbara Nappini puts it, sharing food there isn’t just a habit, it’s practically a philosophy — cooking together, eating together, taking the time it deserves.

Anybody who has been following my writings knows that I am a big fan of the Mediterranean Diet, a healthy eating pattern supported by a large number of scientific studies. However, despite all the focus on the food components, I have increasingly emphasized the importance of the Mediterranean Lifestyle. It is not only what you eat, but also how you eat and prepare your food.

This post is based on an article published on BBC by David Robson and Alessia Franco, “There’s something unique about eating together that’s good for us”.

References

1. Wang, X. et al. (Zhejiang Provincial Centre for Disease Control and Prevention). Meal-sharing patterns and depression risk among older Chinese women. BMC Geriatrics.
2. Eating alone and depressive symptoms in community-dwelling older adults, Tokyo.
3. De Neve, J-E. et al. Sharing meals with others: how sharing meals supports happiness and social connections. World Happiness Report, 2025.
4. Boothby, E. et al. (University of Pennsylvania). Shared experiences amplify the pleasure of food. Personality and Social Psychology Bulletin.
5. Merriam-Webster. The history of the word “companion.” https://www.merriam-webster.com/wordplay/history-of-word-companion
6. Wiktionary. Etymology of 伙伴 (huǒbàn).
7. Eating alone and brain volume in older adults, Japan, 2025. npj Aging.
8. Chronic stress as a risk factor for neural decline. Alzheimer’s & Dementia.
9. Social connections as determinants of cognitive health and as targets for social interventions in persons with or at risk of Alzheimer’s disease. International Psychogeriatrics.
10. Cross-national comparison of meal-sharing practices and the Slow Food Movement. Sociology Compass.
11. BBC News. Italian cuisine and UNESCO’s Intangible Cultural Heritage status.