Cholecystectomy versus central obesity or insulin resistance in relation to the risk of nonalcoholic fatty liver disease: the third US National Health and Nutrition Examination Survey.

Among subjects with cholecystectomy, centrally obese subjects were less likely to be educated, had higher levels of BMI, WC, systolic/diastolic BP, plasma glucose, TC, triglycerides, insulin, and HOMA-IR compared with non-centrally-obese subjects. The prevalence of NAFLD showed an increasing trend from the group with neither central obesity nor cholecystectomy to the group with both central obesity and cholecystectomy (Fig. 1 a).

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