FGF21 and Disorder of lipid metabolism: Therefore, in this study, we will employ a dual-luciferase reporter gene assay to investigate BaP’s regulatory effect on AhR binding to XREs within the FGF21 promoter region and examine BaP’s impact on the expression of FGF21 and related factors, providing new insights for the prevention and treatment of glucose and lipid metabolism disorders induced by BaP.