Background:Nonalcoholic fatty liver disease (NAFLD) is a common complication in patients with metabolic syndrome. The role of statin therapy specifically for the treatment of NAFLD remains unknown. The aim of this review is to discuss outcomes of recent articles analyzing statin therapy in patients with NAFLD.Findings:A total of 12 trials met the inclusion criteria. Statins were not found to increase the prevalence of NAFLD once confounding variables were considered. Statins were also found to be beneficial in treating dyslipidemia and improving liver function. Histological liver outcomes in patients with NAFLD were controversial. One trial found a reduction in the incidence of hepatocellular carcinoma associated with the use of statins.Conclusions:Overall, therapy with statins appears to be safe for use in patients with NAFLD. Several trials have validated the use of statins for the treatment of dyslipidemia; however, it remains unknown as to whether statins should be used to specifically treat NAFLD.

Clinical data suggest that thiazolidinediones--specifically, rosiglitazone and pioglitazone--may improve cardiovascular risk factors through multiple mechanisms. Low insulin sensitivity has been described as an independent risk factor for coronary artery disease and cerebrovascular disease. Patients with insulin resistance often have several known risk factors, such as obesity, dyslipidemia, and hypertension. Other emerging risk factors may be prevalent in patients with insulin resistance, such as hyperinsulinemia, elevated C-reactive protein, elevated plasminogen activator inhibitor levels, and small, dense, low-density lipoproteins. The only available drug class that primarily targets insulin resistance is the thiazolidinediones. These drugs have shown efficacy in affecting surrogate markers of cardiovascular risk in patients with diabetes mellitus. Alterations in these risk factors are likely due to their effects on improving insulin sensitivity and/or glycemic control. Trials to assess whether thiazolidinediones actually reduce cardiovascular outcomes are continuing.