Tg expression of Cyp7a1 in the mouse liver prevented weight gain and reduced adiposity. Female WT or Cyp7a1-tg mice were fed either a chow diet or HFD for 4 months, and (A,B) the body weight, (C) body composition, (D) visceral fat mass, (E) H&E staining of adipocytes, and (F) food intake were determined. Results are expressed as means and standard errors (n =6–10). *Statistically significant difference (P < 0.05) versus WT mice on chow; **statistically significant difference (P < 0.05) versus WT mice on an HFD. Abbreviations: Tg, transgenic; WT, wild-type.