Age and gender intersectionality among African Americans: Salivary uric acid is associated with shorter telomere length in younger adults and men.

Age related diseases present disproportionately among African Americans and have been tied to broad social inequalities and accompanying stress. Yet, there is considerable variability among African Americans in susceptibility, highlighting potential connections to both intersectionality and stress-related biological processes. A growing body of research links exposure to racism and discrimination to telomere length (TL)-an indicator of biological aging that is increasingly implicated in explaining stress-related racial health disparities. However, few studies have examined links to accompanying stress processes that may precede TL shortening. This includes examining Uric Acid (UA), which growing evidence suggests may comprise a unique biological aspect of the acute stress response, with implications for both racial health disparities and within-race heterogeneity. In a secondary analysis of a sample of healthy African Americans (N = 103, 33 men; M age = 31.41 years), we assessed the relationship between salivary UA (sUA) and TL. With an eye towards within-group heterogeneity, we also considered the moderating role of age and gender. Our findings revealed a negative association between UA and TL that was most pronounced in African American men and among younger African Americans. We apply an intersectional lens to interpret these results, revealing that different intersections of identity operate through distinct mechanisms. Among men, UA consistently predicted shorter telomeres regardless of discrimination exposure, suggesting biological pathways may be primary. However, among women, the UA/TL relationship was moderated by discrimination-with UA positively predicting TL under low discrimination but showing negative associations under high discrimination conditions. These findings demonstrate that intersectionality operates through multiple pathways simultaneously, with some intersections characterized by biological vulnerabilities while others are defined by social moderation effects. Future research directions should consider the multifaceted influences of UA on TL, recognizing that different intersectional positions may require examination of distinct biological and social mechanisms including potential interventions targeting UA levels to mitigate age-related illnesses and address health disparities among African Americans. Additionally, future studies should examine how additional intersecting systems of oppression might moderate the relationship between UA and TL.