Recent research suggests that social advantages accrued throughout a person's life may have a significant impact on biological aging processes. A study published in the October edition of the journal Brain, Behavior and Immunity – Health examined data from over 2,100 adults participating in the Midlife in the United States (MIDUS) study. Researchers, led by Anthony Ong from Cornell University, found a correlation between what they termed "cumulative social advantage" and slower epigenetic aging, as well as reduced chronic inflammation.
The concept of cumulative social advantage encompasses the quality and depth of social networks developed over a lifetime, with key areas identified including parental warmth in childhood, community engagement, religious involvement, and the emotional support received from friends and family. The study specifically analyzed two epigenetic clocks—GrimAge and DunedinPACE—which are predictors of morbidity and mortality. Findings indicate that individuals with stronger social connections exhibit younger biological profiles according to these measures.
The researchers noted a link between higher social advantage and lower levels of interleukin-6, an inflammatory marker associated with various health issues, including heart disease and neurodegeneration. However, there were no significant findings related to short-term stress markers.
Unlike previous studies that often examined social factors in isolation, this research emphasizes the cumulative nature of social resources, suggesting that the accumulation of social support over time plays a crucial role in health trajectories. Ong likened social connections to a retirement account, highlighting that consistent investment in relationships over time yields biological benefits. This study reinforces the notion that social engagement is a fundamental determinant of physiological health, underscoring the interconnectedness of social life and aging.