Association between mixed per- and polyfluoroalkyl substance exposure and thyroid hormone levels in the general population of Shandong, China.
Per- and polyfluoroalkyl substances (PFAS) are recognized endocrine disruptors; however, evidence on PFAS mixture effects, exposure thresholds, and mechanisms of thyroid disruption in Chinese populations remains limited. In this cross-sectional study, 22 serum PFAS congeners were quantified by ultra-high-performance li...