Childhood Family Support as a Protective Factor for Adult Mental Health: Does It Hold Under Cumulative Risk?

Childhood family support is widely recognized as a protective factor for mental health, yet it remains unclear whether its buffering role is maintained under conditions of cumulative adversity. This study examined whether perceived childhood family support is associated with adult mental health distress and whether this association varies across levels of childhood adversity and victimization. Data were drawn from a convenience sample of 1571 adults in the United States who completed an online survey assessing childhood family support, adult mental health distress (PHQ-4), childhood victimization, non-victimization adversity, family substance use, and childhood social determinants of health (SDoH) hardship. Ordinary least squares regression models with interaction terms were used to test main and moderating effects. Greater perceived family support was associated with lower adult mental health distress (β = −0.23, p < 0.001). Childhood adversity (β = 0.11, p = 0.002) and childhood victimization (β = 0.13, p = 0.001) were independently associated with higher distress. Importantly, both adversity and victimization significantly moderated the association between family support and distress, such that the protective effect of family support weakened at higher levels of cumulative risk. Robustness analyses indicated that these patterns did not differ by family structure. These results suggest that while family support is beneficial, its protective effects are context-dependent and reduced under conditions of elevated risk. Overall, the findings highlight the importance of conceptualizing resilience as a multi-system process and underscore the need for interventions that address both relational and structural sources of adversity.