As previously noted, obesity is associated with NAFLD; the prevalence of simple steatosis in obese individuals ranges from 30% to 37%,and NAFLD ranges from 57% of overweight individuals attending out-patient clinics to 98% of nondiabetic obese patients. It is noteworthy that obesity is additive to other factors predisposing liver steatosis. For example, in heavy drinkers, obesity increases the risk for steatosis by twofold