The Link Between Difficult People and Aging

A recent study published in the Proceedings of the National Academy of Sciences suggests that navigating relationships with people who frequently create friction or conflict may have tangible consequences on your physical longevity. Researchers have discovered that individuals with high levels of 'hasslers'—defined as those who complicate life or cause unnecessary trouble—often exhibit a biological age that exceeds their actual chronological age.


Key Findings on Biological Impact

The study authors emphasize that these problematic social connections represent an underappreciated risk factor for overall health. Even after controlling for variables such as career path, smoking habits, and early childhood adversity, the correlation between difficult social ties and accelerated aging remained statistically significant.


Quantifying this effect, the researchers noted the following:

  • Each new 'hassler' identified is linked to an approximately 1.5% increase in the pace of biological aging.
  • This equates to roughly nine months of additional biological wear and tear for people of the same chronological age.

Distinguishing Between Relationships

Interestingly, the impact of these individuals varies based on the nature of the relationship. The study found that problematic interactions with friends and family members were particularly damaging. Conversely, friction involving a spouse did not appear to carry the same 'detrimental associations' regarding biological aging.


Beyond physical aging, the presence of these individuals is frequently linked to broader health concerns. The authors noted that

“Hasslers were also associated with multiple adverse mental and physical health outcomes like depression, anxiety and higher body mass index.”


Important Considerations

While the findings are compelling, the research team clarified that they demonstrate a correlation rather than a direct causal link. Furthermore, because 'biological age' lacks a universal definition, the study cannot definitively state that accelerated biological aging leads to earlier mortality. However, the researchers conclude that the data highlights the necessity of addressing chronic stressors in our social environments to support a healthier aging process.