Ketogenic Diet Sharply Reduced Liver Fat
Quick Facts
Can a ketogenic diet reduce fatty liver disease?
The reported trial compared ketogenic, Mediterranean and low-fat diets in people with obesity, prediabetes and fatty liver disease. According to the ScienceDaily report, the ketogenic group experienced a 67% reduction in liver fat and performed better on several metabolic measures, although the available report does not establish whether those advantages will persist over the long term.
Reducing liver fat matters because metabolic dysfunction-associated steatotic liver disease, or MASLD, can progress from simple fat accumulation to inflammation, fibrosis and cirrhosis. AASLD guidance emphasizes that sustained weight loss improves liver health, with modest reductions in body weight often improving steatosis and larger losses generally required to improve inflammation and fibrosis.
Why might carbohydrate restriction lower liver fat?
A ketogenic diet sharply limits carbohydrate intake and shifts the body toward producing ketones from fat. Lower carbohydrate availability can reduce the amount of glucose and insulin circulating after meals, potentially decreasing de novo lipogenesis—the process through which the liver converts excess carbohydrate into fat.
Some of the observed improvement may also result from lower calorie intake and weight loss rather than ketosis itself. Dietary trials cannot always separate these effects because participants may eat less when following a highly restrictive diet. Changes in liver fat should therefore be interpreted alongside body weight, calorie intake, blood lipids, glucose control and medication use.
Should people with fatty liver start a ketogenic diet?
The findings do not make a ketogenic diet the universal treatment for fatty liver disease. Mediterranean-style eating also has substantial evidence supporting cardiometabolic health and is recommended in major liver-disease guidance because it emphasizes vegetables, legumes, whole foods, unsaturated fats and dietary patterns that many people can sustain.
People using insulin, sulfonylureas or sodium-glucose cotransporter-2 inhibitors should consult a clinician before making a major carbohydrate reduction. Medication adjustments may be necessary to prevent hypoglycemia, and SGLT2 inhibitors can rarely contribute to ketoacidosis even when blood glucose is not markedly elevated. Kidney disease, pregnancy, eating-disorder history and significant lipid abnormalities also require individualized assessment.
Frequently Asked Questions
No. Nutritional ketosis is a controlled metabolic response to carbohydrate restriction. Diabetic ketoacidosis is a dangerous medical emergency involving excessive ketones and blood acidity, most often associated with severe insulin deficiency.
Yes. Sustained weight loss, regular physical activity, limiting alcohol when appropriate and dietary patterns such as a Mediterranean-style diet can reduce liver fat and improve metabolic health.
Clinicians may use ultrasound, vibration-controlled transient elastography or MRI-based techniques. Blood tests can identify liver injury or help estimate fibrosis risk, but they do not directly measure liver fat.
References
- ScienceDaily. Keto diet cut liver fat by 67% in a clinical trial. 2026.
- Rinella ME, Neuschwander-Tetri BA, Siddiqui MS, et al. AASLD Practice Guidance on the clinical assessment and management of nonalcoholic fatty liver disease. Hepatology. 2023.
- European Association for the Study of the Liver, European Association for the Study of Diabetes, and European Association for the Study of Obesity. Clinical Practice Guidelines on the management of metabolic dysfunction-associated steatotic liver disease. Journal of Hepatology. 2024.