Keto and Non-Alcoholic Fatty Liver Disease
The ketogenic diet, a low-carbohydrate, high-fat eating pattern, has shown promise in addressing metabolic conditions like non-alcoholic fatty liver disease (NAFLD). In the UK, NAFLD affects roughly 20-30% of adults, often linked to insulin resistance and excess weight. The diet’s mechanism hinges on reducing liver fat accumulation by shifting the body’s primary fuel source from glucose to ketones.
How Keto Affects Liver Fat
NAFLD develops when the liver stores excess fat not caused by alcohol. A 2018 study in Cell Metabolism found that a carbohydrate-restricted diet rapidly reduced liver fat by 42% in just two weeks. Participants saw improvements in liver enzyme markers and insulin sensitivity. The ketogenic diet appears to work by lowering hepatic de novo lipogenesis – the liver’s process of creating fat from carbohydrates.
insulin resistance and metabolic health often improve alongside these changes. As the body enters ketosis, it begins burning stored fat for energy, which may reduce the fatty deposits in liver cells. This metabolic shift also lowers triglyceride levels, a key factor in NAFLD progression.
What This Means in Practice
Adopting a ketogenic diet for NAFLD involves prioritising whole foods while avoiding sugars and refined grains. At Tesco, a typical day might include:
- Breakfast: Scrambled eggs with spinach (£1.20 for 6 free-range eggs)
- Lunch: Grilled mackerel with roasted courgette (£3.50 for two fresh mackerel fillets)
- Dinner: Beef mince chilli with cauliflower rice (£4.30 for 500g 12% fat beef)
Seasonal UK produce like spring cabbage or autumn squash can add variety without excess carbs. The NHS recommends gradual dietary changes for liver health, noting that even 5-10% weight loss can significantly improve NAFLD markers.
Scientific Support for Keto in NAFLD
Beyond the Cell Metabolism study, research in Nutrients (2017) analysed multiple trials showing low-carb diets improved liver fat content independent of weight loss. The ketogenic diet’s effects on insulin sensitivity appear particularly relevant, as insulin resistance drives fat accumulation in liver cells. managing blood sugar levels through carbohydrate restriction may therefore benefit both NAFLD and associated metabolic conditions.
Frequently Asked Questions
Can keto reverse fatty liver disease?
While no diet can guarantee reversal, research shows ketogenic diets may significantly reduce liver fat content. The 2018 Cell Metabolism study demonstrated rapid improvements, with some participants seeing near-normal liver fat levels after dietary intervention.
How quickly might I see changes?
Metabolic shifts begin within days, but measurable liver fat reduction typically takes 2-12 weeks. Blood markers like ALT and AST may improve faster, sometimes within a month under medical supervision.
Are there risks to consider?
Rapid weight loss can temporarily increase liver inflammation. People with NAFLD should transition gradually and consult a GP, especially if taking diabetes medications or with advanced liver scarring.
The Bottom Line
The ketogenic diet offers a promising dietary approach for non-alcoholic fatty liver disease by targeting its metabolic roots. Through carbohydrate restriction and increased fat metabolism, it may reduce liver fat accumulation and improve associated markers like insulin sensitivity. If you’d rather not do the macro maths yourself, the Keto Dieting app does it for you on Google Play and the App Store.
References
- Mardinoglu A, Wu H, Bjornson E, et al. (2018). An Integrated Understanding of the Rapid Metabolic Benefits of a Carbohydrate-Restricted Diet on Hepatic Steatosis in Humans. Cell Metabolism. https://doi.org/10.1016/j.cmet.2018.01.005
- Kosinski C, Jornayvaz FR (2017). Effects of Ketogenic Diets on Cardiovascular Risk Factors: Evidence from Animal and Human Studies. Nutrients. https://doi.org/10.3390/nu9050517
