Keto Diet Significantly Reduces Liver Fat in Clinical Trial

Why Carbohydrate Restriction May Target Liver Fat

A clinical trial conducted in August 2026 found that participants following a ketogenic diet reduced liver fat by 67% over the study period, outperforming those on Mediterranean and low-fat diets. The study included adults diagnosed with obesity, prediabetes, and non-alcoholic fatty liver disease, all of whom were monitored for metabolic health changes. Researchers from Cell Press reported that the ketogenic group showed the most pronounced improvements across multiple health markers.

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The trial compared three dietary approaches: a high-fat, very low-carbohydrate ketogenic diet; a Mediterranean diet rich in olive oil, fish, and vegetables; and a standard low-fat diet. Participants adhered to their assigned plans under supervision, with regular assessments of liver fat via imaging, insulin sensitivity, and lipid profiles. While all groups experienced weight loss, only the ketogenic group demonstrated such a substantial decrease in hepatic fat accumulation, suggesting a unique metabolic effect of carbohydrate restriction on liver metabolism.

What This Means for Treating Fatty Liver Disease

Scientists involved in the study noted that reducing carbohydrate intake lowers insulin levels, which in turn decreases the liver’s production and storage of fat. This metabolic shift encourages the body to burn fat for energy, including fat stored in the liver. One researcher explained that the ketogenic state promotes fatty acid oxidation and reduces de novo lipogenesis, the process by which the liver converts excess sugars into fat. These mechanisms likely contributed to the observed improvement in liver health, independent of weight loss alone.

The findings suggest that dietary intervention, particularly carbohydrate restriction, could play a central role in managing non-alcoholic fatty liver disease, a condition affecting millions worldwide and often linked to insulin resistance. While the Mediterranean and low-fat diets also improved certain metabolic indicators, none matched the ketogenic diet’s impact on liver fat reduction. Researchers caution that long-term adherence and potential side effects require further study, but the results support exploring ketogenic approaches as a therapeutic option for metabolic liver conditions.

How long did the trial last? The study duration was not specified in the source material, but measurements were taken over a defined clinical period sufficient to observe changes in liver fat and metabolic health.

Frequently Asked Questions

Can the ketogenic diet be harmful for some individuals? The source does not address potential risks or contraindications of the ketogenic diet, so no conclusions about safety can be drawn from this trial alone.

Is weight loss necessary for liver fat reduction on a keto diet? Although all groups lost weight, the ketogenic group’s liver fat improvement was disproportionately large, suggesting effects beyond weight loss alone.