Fatty Liver (MASLD): What to Eat, What to Avoid and How Much Weight to Lose to Reverse It

An important note before we start: fatty liver needs medical diagnosis and follow-up. This guide is general information and does not replace your doctor. That said, lifestyle is the foundation of treatment in every guideline, so knowing what works, and by how much, gives you a powerful tool.

What fatty liver is and why it is now called MASLD

It is fat stored in the liver of a person with at least one metabolic risk factor: excess weight or a large waist, high blood sugar or diabetes, high blood pressure, high triglycerides or low HDL. In 2023 the major hepatology societies replaced the name “non-alcoholic fatty liver disease” with MASLD, and created the MetALD category for people who also drink a fair amount of alcohol: between 140 and 350 g a week for women, or between 210 and 420 g for men (Rinella, 2023). It is very common: a meta-analysis of 92 studies with more than 9 million people put it at 30% of adults worldwide, and rising, from 25% in 1990–2006 to 38% in 2016–2019 (Younossi, 2023). Since abdominal fat is one of the factors most closely linked to it, a handy home indicator is the waist-to-height ratio.

How much weight to lose and what improves

Two nuances from that study worth knowing. First: in women, people with a BMI of 35 or more, high fasting blood sugar or a lot of cell damage on the biopsy, clear improvement came with losses of 10% or more. Second: results were better the more weight was lost, but only 30% reached 5%, so what makes the difference is a deficit you can sustain for months, not a crash diet. The review by Romero-Gómez (2017) sums it up the same way: more than 5% already improves liver fat and activity, and 10% or more achieves near-universal resolution of steatohepatitis.

What to eat and what to avoid (and the evidence behind it)

Exercise, coffee and alcohol: what the evidence says

Exercise reduces liver fat even when the scales barely move (Keating, 2012), and it does not matter whether it is interval or continuous training: both lowered it by about 3 percentage points compared with no training (Sabag, 2022). With coffee the data are observational: it was linked to a 29% lower risk of fatty liver and 30% less fibrosis among people who already have it (Wijarnpreecha, 2017), which does not show that coffee is the cause. With alcohol there are no nuances in its favour: the 2024 European guideline advises against drinking it with MASLD. If you want to cut down, here is how alcohol affects your weight, and for sugar, how to cut down on sugar.

What does not work: “detox” and miracle supplements

No clinical guideline, including the 2024 European one, recommends cleansing teas, juice fasts or “detox” products for fatty liver. What the guideline does include, besides lifestyle, is treating the conditions that come with it (diabetes, obesity, blood pressure, cholesterol), sometimes with incretin-based drugs when they are indicated for those conditions, bariatric surgery in some cases of obesity and, where approved, a specific drug (resmetirom) for steatohepatitis with significant fibrosis. Vitamin E or pioglitazone are only considered in selected patients. All of that is decided and prescribed by the specialist: none of it is for taking on your own.

The habits that make the difference

• A sustained calorie deficit to lose between 7% and 10% of your weight (or more, if your doctor advises it).
• Water instead of soft drinks and juices; coffee without sugar.
• Mediterranean pattern: vegetables, pulses, fish, nuts and olive oil.
• Regular exercise, interval or continuous, even if you do not lose much weight.
• Avoiding alcohol.
• Medical follow-up with blood tests and, if needed, elastography, to see how it evolves.

Fatty liver is a warning sign that lifestyle can reverse in many cases. Rely on your doctor for diagnosis and follow-up, and use Renzy to sustain what matters most: a moderate deficit, less liquid sugar and a Mediterranean pattern.