A tightly run clinical trial found a ketogenic diet cut liver fat by 67% while sending many people’s prediabetes into remission.
Story Snapshot
- Ketogenic diet reduced liver fat by 67% in adults with fatty liver and prediabetes.
- Mediterranean and low-fat plant-based diets cut liver fat by about 45%.
- About half on keto no longer met prediabetes criteria after roughly five months.
- All groups lost about 10% of their body weight, yet keto delivered greater gains in liver and glucose.
Keto Outperformed Two Respected Diets On Liver Fat
A randomized clinical trial in Cell Metabolism compared three diets for about five months in adults with obesity, prediabetes, and fatty liver disease. The ketogenic group reduced liver fat by about 67%, while the Mediterranean and low-fat plant-based groups each saw about 45% reductions.
The design matters. All groups lost around 10% of body weight, so this gap points to diet composition, not just pounds lost. The study’s liver fat data give clinicians and patients a clear signal to consider.
METABOLIC PERK: A clinical trial found the keto diet slashed liver fat by 67% — nearly double the reduction seen with Mediterranean and low-fat diets — in adults with obesity and prediabetes who all lost the same amount of weight.
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Fatty liver drives insulin resistance, elevated triglycerides, and future diabetes risk. Cutting liver fat that deeply and that fast changes the metabolic landscape.
The study also reported that liver insulin sensitivity improved two to three times more on keto than on the other diets, which helps explain better glucose control. When the liver stops overproducing glucose, fasting sugar falls. That is the domino that tips many downstream wins.
Prediabetes Remission Was Common On Keto
About half the people assigned to the ketogenic diet no longer met prediabetes criteria at the end of the trial. By comparison, about 29% on the Mediterranean diet and about 7% on the low-fat plant-based diet met that bar. Those numbers matter to real lives.
Prediabetes does not have to march toward diabetes. With the right tool, the trend can bend back. This trial suggests carbohydrate restriction can be that tool, at least for many in this specific group.
Reporters noted the research team presented keto as a short-term option worth discussing for patients with obesity or prediabetes. That framing lines up with what front-line clinicians often do: use potent, time-limited diets to hit a clear target, then reassess.
Weight Loss Was Similar; Results Point To Food Mix, Not Just Calories
Every group lost close to 10% of body weight, a strong result by itself. Yet the ketogenic arm still outpaced the other diets on liver fat and glycemic markers. That suggests the macronutrient pattern—very low carbohydrate, higher fat, and adequate protein—drove the added benefit.
Prior reviews have seen a similar pattern: very-low-carbohydrate and ketogenic strategies often yield larger drops in liver fat and triglycerides beyond weight loss alone. Mechanism and outcomes are starting to rhyme.
The practical lesson is simple. If the goal is to quickly unload fat from the liver and calm glucose swings, slashing starch and sugar can yield a stronger early response. Many patients find early wins boost motivation.
Early wins also lower the need for new drugs and cut costs. Use the sharpest tool first, track lab numbers under guidance, and keep what works.
How To Apply This Without Going Off The Rails
Patients should not DIY a strict ketogenic plan without basics in place. A doctor should confirm the diagnosis, check a lipid panel, and set targets. A registered dietitian can design a plan rich in non-starchy vegetables, eggs, fish, lean meats, olive oil, nuts, and fermented dairy while keeping carbohydrate intake very low.
A continuous glucose monitor or finger-stick checks can show progress within days. A magnetic resonance scan or ultrasound-based fat estimate can confirm liver changes over time.
Not everyone needs full keto to benefit. Some will thrive on a lower-carbohydrate Mediterranean plan with extra protein and far less sugar.
But the trial’s message is clear enough to act on now: when liver fat and prediabetes are front and center, carbohydrate restriction—done well, with real food—can produce outsized short-term gains.
One brief caveat remains: the trial ran for a few months, so long-term results will need continued follow-up. Still, for the next clinic visit, this is actionable news.
Sources:
foxnews.com, sciencedaily.com, sciencemediacentre.es
