Stress & Inflammation Drive Racial Mortality Gap

A new study published in JAMA Network Open indicates that nearly half of the mortality gap between Black and White adults stems from a lifetime of stress and heightened inflammation. Researchers analyzed proteins linked to inflammation, connecting them to experiences of discrimination and social challenges.

This biological toll, often referred to as 'weathering,' results from the cumulative effects of adversity, trauma, and economic hardship. Over 17 years, the study observed that Black participants experienced higher mortality rates, with stress and inflammation explaining 49.3% of this disparity.

Experts note that the study's findings likely represent an undercount, as the most significantly affected individuals may have already passed away. They emphasize that the daily stresses of resilience, including microaggressions and code-switching, also contribute significantly to this physiological wear and tear.

The research reinforces the understanding that systemic racism directly drives racial health inequities. While not pinpointing specific structural racism factors, the study highlights inflammation biomarkers as a measure of stress's impact on the body, a novel yet significant finding in health equity research.