Mahjong and Social Connection: What Research Says About Fighting Loneliness

In 2023, the U.S. Surgeon General released an 82-page advisory with a stark message: loneliness is killing us.

As reported in the BMJ and JAMA, the advisory found that roughly half of American adults experience measurable loneliness. Social disconnection increases the risk of heart disease by 29%, dementia by 50%, and stroke by 32%. The health consequences, the Surgeon General noted, are comparable to smoking up to 15 cigarettes a day.

A 2025 paper in the International Journal of Wellbeing built on the advisory, arguing that the growing isolation of America's elderly as households shrink demands urgent, practical solutions — not just awareness campaigns, but community-level social infrastructure that gives people reasons to show up, sit down, and be present with other humans.

Mahjong, it turns out, may be one of the most effective forms of that infrastructure.

Why Mahjong Works Where Other Activities Don't

Not all social activities are created equal. A 2012 study published in Social Indicators Research — one of the most-cited papers in this area, with 339 academic citations — examined what kinds of leisure activities actually predict social connectedness in older people. The finding was clear: active social leisure activities — games, clubs, sports, volunteering — are significant predictors of connectedness. Passive activities like watching television, listening to the radio, or browsing the internet are not.

This distinction matters. Scrolling social media feels social. Watching a show in a room with other people feels social. But the research says these activities don't move the needle on loneliness. What works is structured, in-person engagement that requires interaction — exactly what mahjong provides.

A mahjong game lasts two to three hours. You sit across from three other people. You are constantly engaged — drawing, discarding, reading discards, adjusting strategy, calling tiles. But the game also has natural pauses between hands that create space for conversation. You don't have to force small talk. The game gives you something to talk about, something to react to, and a shared experience that deepens over weeks and months of regular play.

A 2018 study in BMC Geriatrics (59 citations) found a statistically significant reduction in loneliness among older adults who joined community activity groups — especially following major life events like retirement, moving to a new area, or losing a spouse. The researchers found that group membership provided "new and diverse social connections through shared interest and experience." That's a clinical description of what every mahjong club organizer has seen firsthand.

The Mahjong-Specific Evidence

Several studies have looked at mahjong specifically — not just social activities in general — and the results are striking.

A 2019 longitudinal study published in SSM - Population Health used data from the Chinese Longitudinal Healthy Longevity Survey (2005-2011) to examine whether specific leisure activities could prevent chronic loneliness in older adults. The researchers found that frequent participation in playing mahjong was negatively associated with persistent loneliness. They specifically identified mahjong as a "culturally-rooted leisure activity that can serve as an effective intervention strategy to prevent and alleviate chronic loneliness."

A large-scale 2019 study in Social Science & Medicine — with over 150 academic citations — analyzed 10,988 adults aged 45 and older and found that among urban participants, playing mahjong predicted a significant decline in depressive symptoms. The researchers noted that the combination of intellectual stimulation and social interaction may drive the mental health benefits.

A 2024 study in Frontiers in Public Health confirmed the pattern among 8,181 older adults aged 60 and older: participating in social activities including mahjong significantly reduced depression levels. Greater frequency of participation correlated with lower depression scores.

And a 2025 study in Frontiers in Public Health — one of the largest in the field, with 36,934 participants — found that participation in mahjong and bridge was positively associated with subjective wellbeing, mediated by both social interaction and cognitive stimulation. The effect was strongest for retired individuals, suggesting that the game helps fill the social gap left when people leave the structured environment of a workplace.

In-Person Matters

One finding from the broader research is worth highlighting for anyone who plays mahjong: digital connection is not a substitute for the real thing.

A 2023 pilot study published in the Journal of Technology in Behavioral Science tested a chat-based mobile game with older adults and found that in-game interaction alone was "perceived as too superficial to be meaningful." The researchers concluded that in-person contact was critical for genuine social engagement — and that game design should focus on creating personal interaction moments, not just gameplay mechanics.

This aligns with what a 2021 study presented at the CHI Conference on Human Factors found about remote tabletop gaming: meaningful social play requires shared space, shared awareness, and shared time. The more of those elements you remove, the less socially connected people feel.

This doesn't mean online mahjong has no value — it can supplement in-person play, help players practice, and keep communities connected between game nights. But the deepest benefits come from sitting at a table with three other people, tiles in hand, conversation flowing naturally between rounds.

Building the Social Infrastructure

The Surgeon General's advisory calls for rebuilding "social infrastructure" — the physical and cultural foundations that make human connection possible. Community centers. Parks. Libraries. Places where people have reasons to gather.

A mahjong club is social infrastructure. It's a recurring, structured reason for people to leave their homes, sit down together, and engage in two to three hours of face-to-face interaction. For retirees who lost the built-in social network of a workplace, for people who relocated to a new city, for anyone navigating a life transition — a weekly mahjong game can be the anchor that holds their social life together.

Research in the Journal of the American Geriatrics Society (2022) noted that mahjong engages multiple cognitive domains alongside interpersonal social contact, and that this combination of intellectual and social engagement is associated with lower risk of cognitive impairment. The game doesn't just fight loneliness — it fights cognitive decline at the same time.

Club organizers see this every week. What starts as "a few tables on Tuesday night" becomes the thing people protect on their calendar. The group text that goes quiet all week lights up on Monday: "See you tomorrow?" The friendships that form aren't shallow — they're built on hundreds of shared hours, the kind of easy rapport that only comes from regular, in-person time together.

What You Can Do

If you're already playing mahjong regularly, the research confirms what you probably already feel: this game is doing more for your health than you realized. Keep playing.

If you're playing occasionally, consider making it a weekly habit. The studies consistently show that frequency matters — regular participation drives the benefits.

If you're not playing at all but have been curious, now is the time. Find a club near you — many welcome beginners and will teach you the game. Or start your own. You only need three other people and a place to play.

The Surgeon General is right: loneliness is an epidemic. But the prescription might be simpler than anyone expected. Four chairs. A tile set. A Tuesday night. The game takes care of the rest.

For more on the cognitive benefits, see our deep dive: Mahjong and Brain Health: Why Playing Tiles Keeps Your Mind Sharp.