The loneliness of modern people is becoming more and more prominent, and has brought profoundly negative effects on mental health. Social support is an important predictor of loneliness. However, the size of the correlation reported by studies on the relation between social support and loneliness varies greatly. The aim of this meta-analysis is to determine the relation between social support and loneliness. One hundred and seventy-seven articles (N = 113,427) were identified, and robust variance estimation with random effects were used. As expected, higher levels of social support were negatively correlated with loneliness (r = -0.39). The association between social support and loneliness were also moderated by several variables. Specifically, the negative relationship between loneliness and social support among rural populations is stronger than that of urban populations in Chinese samples, the effect of perceived social support (r = -0.45) on loneliness is greater than that of other social supports (r = -0.36), and the friend support (r = -0.48) played a more important role in reducing loneliness than that of two other supports (family support: r = -0.34; significant other support: r = -0.40). The current results support robust links between social support and loneliness, emphasizing the important role of social support in reducing levels of loneliness, this may have some implications for future research and loneliness treatments.
Keywords: Loneliness; Mental health; Meta-analysis; Social support.
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