Summary: Regular social engagement—such as playing mahjong—can help reduce symptoms of depression among middle-aged and older adults.

Source: University of Georgia

Mahjong and Social Participation Linked to Lower Depression Rates in Older Chinese Adults

A new study from the University of Georgia finds that active social participation, including playing mahjong, is associated with lower levels of depressive symptoms among middle-aged and older adults in China. The research, published in Social Science & Medicine, analyzed nationally representative survey data to explore how the type, frequency, and diversity of social activities influence mental health in both urban and rural settings.

Lead author Adam Chen, an associate professor of health policy and management at UGA’s College of Public Health, notes that global demographic and epidemiologic shifts have increased the mental health burden among older adults—particularly in low- and middle-income countries. China accounts for a substantial share of global mental health burden, and rising social isolation and loneliness among older adults are key concerns as the population ages.

Study Design and Key Measures

Researchers used data from nearly 11,000 Chinese residents aged 45 and older drawn from the China Health and Retirement Longitudinal Study (CHARLS), combining responses from wave 1 (2011), wave 2 (2013), and wave 4 (2015). The analysis focused on changes in depressive symptoms alongside changes in social participation (SP). Types of social participation measured included visiting friends, playing mahjong or cards, participating in sports or social clubs, and volunteering.

The team applied fixed-effects models to measure how within-person changes in the diversity and frequency of social activities related to changes in depressive symptoms. This approach helps control for unobserved individual characteristics that remain constant over time, isolating the association between social engagement and mental health outcomes.

Main Findings

Overall, increasing the variety and frequency of social activities was associated with improved mental health. Participants who moved from no social participation to engaging in one or more types of social activities, or who reported participating at least weekly, experienced declines in depressive symptoms. These results held after accounting for other personal and socioeconomic factors.

Urban residents who regularly played mahjong or cards, and those who joined sports or social clubs, showed notable reductions in depressive symptoms. For rural residents, the most consistent benefit came from maintaining regular interactions with friends.

Surprisingly, rural respondents reported higher rates of depression and lower overall levels of social participation compared with urban residents. The authors suggest this may reflect social and demographic shifts in rural communities—many working-age adults moving to cities for employment, weakening local communal ties even when family connections persist.

Context and Interpretation

While the protective effect of social engagement on mental health is well known in some high-income countries, this study provides important evidence from a developing country context and highlights rural-urban differences. The researchers emphasize that social participation does not have a uniform effect across settings or activity types. For example, mahjong was associated with improved mental health for urban older adults but not for rural elders; the authors hypothesize that in some rural areas mahjong may be more competitive or linked to gambling, which could negate social benefits.

Policy implications include the potential for targeted community interventions that encourage diverse and regular social activities among older adults. Programs that foster friend networks, clubs, and inclusive leisure activities could be prioritized—especially in rural communities where depressive symptoms appear more prevalent and social participation is lower.

Relevance Beyond China

The study’s findings may also have relevance for Asian American communities and other diaspora groups. Chen points out that older Asian Americans report higher rates of suicidal thoughts than some other demographic groups in the United States, suggesting that improving opportunities for culturally familiar social participation—such as game groups and community clubs—might help address unmet mental health needs.

Original research: “Melancholy or mahjong? Diversity, frequency, type, and rural-urban divide of social participation and depression in middle- and old-aged Chinese: A fixed-effects analysis.” Adam Chen et al., Social Science & Medicine.

Sample and methods: 10,988 community respondents aged 45+ from three CHARLS waves (2011, 2013, 2015); fixed-effects analysis to assess within-person changes in social participation and depressive symptoms.

Implications: Increasing the diversity and frequency of social participation is associated with reduced depressive symptoms in older adults, but the social value of specific activities varies by urban versus rural residence. Policymakers and community health practitioners should consider culturally appropriate strategies to enhance social engagement among older populations.