In addition , there was a low level of evidence that hypercaloric fructose and glucose diets have similar effects on liver fat and liver enzymes in healthy adults .
There was insufficient evidence to draw a conclusion for effects of HFCS or sucrose on NAFLD .
Conclusions : On the basis of indirect comparisons across study findings , the apparent association between indexes of liver health ( ie , liver fat , hepatic de novo lipogenesis , alanine aminotransferase , AST , and γ-glutamyl transpeptase ) and fructose or sucrose intake appear to be confounded by excessive energy intake .
Overall , the available evidence is not sufficiently robust to draw conclusions regarding effects of fructose , HFCS , or sucrose consumption on NAFLD
Background : Concerns have been raised about the concurrent temporal trend between simple sugar intakes , especially of fructose or high-fructose corn syrup ( HFCS ) , and rates of nonalcoholic fatty liver disease ( NAFLD ) in the United States .
Objective : We examined the effect of different amounts and forms of dietary fructose on the incidence or prevalence of NAFLD and indexes of liver health in humans .
Magnetic resonance spectroscopy to measure hepatic triglyceride content: prevalence of hepatic steatosis in the general population.
Despite the increasing prevalence of nonalcoholic fatty liver disease ( NAFLD ) , the criteria used to diagnose the disorder remain poorly defined . Localized proton magnetic resonance spectroscopy ( MRS ) accurately measures hepatic triglyceride content ( HTGC ) but has been used only in small research studies . Here , MRS was used to analyze the distribution of HTGC in 2,349 participants from the Dallas Heart Study ( DHS ) . The reproducibility of the procedure was vali date d by showing that duplicate HTGC measurements were high correlated ( r = 0.99 , P < 0.001 ) and that the coefficient of variation between measurements was low ( 8.5 % ) . Intake of a high-fat meal did not significantly affect the measurements , and values were similar when measurements were made from the right and left hepatic lobes . To determine the " upper limit of normal " for HTGC , the distribution of HTGC was examined in the 345 subjects from the DHS who had no identifiable risk factors for hepatic steatosis ( nonobese , nondiabetic subjects with minimal alcohol consumption , normal liver function tests , and no known liver disease ) . The 95th percentile of HTGC in these subjects was 5.56 % , which corresponds to a hepatic triglyceride level of 55.6 mg/g . With this value as a cutoff , the prevalence of hepatic steatosis in Dallas County was estimated to be 33.6 % . Thus MRS provides a sensitive , quantitative , noninvasive method to measure HTGC and , when applied to a large urban US population , revealed a strikingly high prevalence of hepatic steatosis
In addition , there was a low level of evidence that hypercaloric fructose and glucose diets have similar effects on liver fat and liver enzymes in healthy adults .
There was insufficient evidence to draw a conclusion for effects of HFCS or sucrose on NAFLD .
Conclusions : On the basis of indirect comparisons across study findings , the apparent association between indexes of liver health ( ie , liver fat , hepatic de novo lipogenesis , alanine aminotransferase , AST , and γ-glutamyl transpeptase ) and fructose or sucrose intake appear to be confounded by excessive energy intake .
Overall , the available evidence is not sufficiently robust to draw conclusions regarding effects of fructose , HFCS , or sucrose consumption on NAFLD
Background : Concerns have been raised about the concurrent temporal trend between simple sugar intakes , especially of fructose or high-fructose corn syrup ( HFCS ) , and rates of nonalcoholic fatty liver disease ( NAFLD ) in the United States .
Objective : We examined the effect of different amounts and forms of dietary fructose on the incidence or prevalence of NAFLD and indexes of liver health in humans .