Ketogenic Diet Improved Liver Health in Recent Study

A clinical trial found that a low-carb diet outperformed others in managing blood sugar and reducing liver fat in adults.

Updated on Sept. 27, 2026 in Nutrition

Bold vector editorial illustration of an artichoke heart and avocado slice, representing nutritional and liver health research. — A study from Washington University School of Medicine suggests a ketogenic diet may be more effective than other diets for improving liver health. AI Illustration. Upload story photo >

Live Poll

Do you believe the type of diet is more important for health than weight loss alone?

Researchers at Washington University School of Medicine published findings on August 27, 2026, comparing the metabolic effects of three distinct diets. The study revealed that a ketogenic diet led to superior improvements in liver health and glucose control compared to Mediterranean and high-carbohydrate plans.

Why it matters

The study aimed to determine if different macronutrient balances produce unique health outcomes even when weight loss remains consistent across groups. These results suggest that diet composition may play a crucial role in treating prediabetes and liver-related metabolic issues.

In a clinical trial of 55 obese adults, the ketogenic diet reduced liver fat by 67% and 24-hour blood glucose by 20%. Other groups saw a 45% reduction in liver fat and an 8% drop in blood glucose levels.

The players

Washington University School of Medicine

This academic medical institution based in St. Louis led the clinical trial and metabolic research.

The details

Participants were provided with all food and attended weekly dietitian meetings during the five-month study. While all three groups achieved a similar 10% reduction in body weight and 50% improvement in muscle insulin sensitivity, the ketogenic cohort saw a 74% decline in insulin levels compared to 44% and 27% in the other groups.

The findings were published on August 27, 2026.
Participants adhered to their assigned diets for 5 months.

The Big Picture

This study follows a pattern set by the Washington University School of Medicine metabolic research program in evaluating how macronutrient ratios impact chronic disease reversal. These findings provide a data-driven benchmark for comparing the metabolic efficacy of popular dietary patterns.

Patients struggling with prediabetes may consult with their doctors about whether a ketogenic approach is medically appropriate for their specific health needs. The study highlights that diet composition can significantly alter insulin response and liver health beyond mere weight loss.

The takeaway

This research demonstrates that not all weight-loss diets provide the same metabolic advantages for adults with obesity. Individuals should focus on specific macronutrient goals when trying to manage blood sugar or liver-related conditions.