ArticleCardiovascular toxicology2026
Associations Between Welding-Related Metals and Atherosclerotic Cardiovascular Disease Risk in Male Welders: The Mediating Role of Accelerated Biological Aging.
Article in Cardiovascular toxicology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The impact of metals on atherosclerotic cardiovascular disease (ASCVD) risk in workers occupationally exposed to welding fume remains unclear. We aimed to assess the associations between welding-related metals and 10-year ASCVD risk, and the mediating role of biological aging. Metals including chromium, manganese, nickel, lead, copper (Cu), and iron were detected and biological aging indices, including Klemera-Doubal method biological age (KDM-BA) and Phenotypic Age (PhenoAge), were calculated among 419 male welders in Wuhan, China. The participants had an average age of 42.77 years, of whom 93 (22.2%) fell into the high 10-year ASCVD risk group. Generalized linear models revealed that Cu was associated with elevated 10-year ASCVD risk [OR (95% CI) = 1.051 (1.017, 1.085), P = 0.003]. This association persisted even after adjustment for other metals. Moreover, we found positive associations between biological aging and 10-year ASCVD risk [KDM.Accel: OR (95%CI) = 1.170 (1.070-1.280); PhenoAge.Accel: OR (95% CI) = 1.122 (1.053-1.194)], as well as between Cu and biological aging [KDM.Accel: β (95% CI) = 1.888 (1.130-2.646); PhenoAge.Accel: β (95% CI) = 4.552 (3.406-5.698)]. Further analysis showed significant mediation roles of KDM.Accel and PhenoAge.Accel in the Cu-ASCVD association, with mediating proportions of 29.8% and 43.8%, respectively. We further constructed a lifestyle index, suggesting that a modifiable healthy lifestyle could decelerate aging and reduce the 10-year ASCVD risk. Our findings indicated that Cu was associated with increased ASCVD risk, and biological aging may mediate the Cu-ASCVD association. Adopting healthy lifestyles appears to mitigate biological aging, which is of great public health importance for preventing ASCVD.
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