What is fatty liver disease?
Fatty liver means excess fat is stored in the liver cells. When it is not related to heavy alcohol use, it is called non-alcoholic fatty liver disease (NAFLD), recently renamed metabolic dysfunction-associated steatotic liver disease (MASLD). Many people have no symptoms, and it is often found on a blood test or ultrasound. In some people, the fat triggers inflammation and scarring (steatohepatitis, NASH or MASH), which can progress to cirrhosis. NAFLD is closely tied to insulin resistance, abdominal obesity, type 2 diabetes, high triglycerides and high blood pressure.
Why the Mediterranean diet?
Clinical trials show that a Mediterranean diet reduces liver fat and improves insulin sensitivity even without significant weight loss, and when combined with calorie reduction it lowers liver enzymes and liver stiffness. The EASL-EASD-EASO guidelines recommend a Mediterranean diet as the pattern of choice for NAFLD, with a 7–10% weight loss target for people with overweight. The diet’s benefits likely come from its high fibre, olive oil and omega-3 content, plenty of antioxidants and low intake of added sugars and ultra-processed foods. See dieta para hígado graso (Spanish).
Foods to eat
- Vegetables and fruit: leafy greens, tomatoes, peppers, broccoli, berries, citrus; vegetables at every main meal.
- Whole grains: oats, whole wheat, brown rice, barley, quinoa.
- Legumes: lentils, chickpeas, beans, several times a week.
- Olive oil (extra virgin) as the main fat.
- Nuts and seeds: a small handful daily (walnuts, almonds).
- Fish: fatty fish (salmon, sardines, mackerel) at least twice weekly.
- Moderate amounts of eggs, poultry and dairy (yoghurt, cheese).
- Herbs, spices, garlic and onion for flavour.
- Coffee: studies link regular coffee (without sugar) with lower fibrosis risk.
Foods to limit or avoid
- Sugary drinks and fruit juices, including fructose-sweetened products: strongly linked to liver fat.
- Added sugars and sweets, pastries, biscuits and sweetened breakfast cereals.
- Refined carbohydrates: white bread, white rice and pasta in large portions.
- Red and processed meats: bacon, sausages, cured meats, burgers.
- Saturated and trans fats: fried foods, fast food, butter, palm oil, ultra-processed snacks.
- Alcohol: it is safest to avoid it, or at least keep it very low, in fatty liver.
- Salt: reduce, particularly if blood pressure is raised.
Weight loss and exercise
- Weight loss: 3–5% reduces liver fat; 7–10% improves inflammation and may reverse fibrosis in some people. Aim for gradual loss of 0.5–1 kg per week.
- Avoid crash diets: rapid weight loss can worsen inflammation in some people.
- Exercise: at least 150 minutes of moderate activity weekly, plus resistance training twice a week, reduces liver fat even without weight change.
- Sleep and stress: poor sleep and chronic stress worsen insulin resistance.
- Treat associated conditions: diabetes, cholesterol and blood pressure.
Sample day
- Breakfast: plain Greek yoghurt with oats, walnuts and berries; coffee without sugar.
- Lunch: lentil and vegetable stew, mixed salad dressed with olive oil and lemon, a piece of fruit.
- Snack: raw vegetables with hummus, or a handful of almonds.
- Dinner: grilled sardines or salmon, roasted vegetables and a small portion of whole-grain bread or brown rice.
- Drink water, and herbal tea; avoid sugary drinks.
Supplements and “liver cleanses”
There is no proven “detox” or liver-cleanse for fatty liver. Vitamin E may be used in selected non-diabetic adults with biopsy-proven NASH under specialist supervision. Omega-3 supplements may reduce liver fat but evidence is mixed. Some herbal products and high-dose supplements can harm the liver. Always tell your doctor about all supplements you take.
Monitoring and follow-up
Doctors assess the risk of fibrosis using blood scores (such as FIB-4), liver stiffness elastography (FibroScan) and, in selected cases, biopsy. People with significant fibrosis need specialist care and screening for complications. Even with a normal liver enzyme test, fatty liver deserves lifestyle treatment, because it is closely linked with cardiovascular risk.
When to see a doctor
- Abnormal liver tests or fatty liver on an ultrasound.
- Diabetes, high cholesterol or obesity with abdominal discomfort or fatigue.
- Yellow skin or eyes, dark urine, pale stools or severe itching.
- Abdominal swelling, vomiting blood or black stools.
- Confusion or drowsiness.
- Planning to start new medicines or supplements.
Three common situations
A person with slightly raised liver enzymes and a bright liver on ultrasound: start a Mediterranean diet, exercise and ask your doctor about fibrosis risk.
Someone with diabetes and fatty liver: combine dietary change with medical management of glucose and weight.
A heavy soft-drink consumer: replacing sugary drinks with water is one of the highest-impact changes.
Key points to remember
The Mediterranean diet reduces liver fat and cardiometabolic risk. Combine it with weight loss if you are overweight, regular exercise, no sugary drinks and little or no alcohol. Seek regular medical follow-up. Our nutrition team can design a plan for you.
This guide is for general information and does not replace an assessment by your own doctor or dietitian.
Questions about the Mediterranean diet for fatty liver
These answers are general information and do not replace an examination or individual medical advice.
Can fatty liver be reversed?
Often yes, in the early stages: weight loss, a Mediterranean diet, exercise and avoiding sugary drinks and alcohol can reverse fat and inflammation.
How much weight should I lose?
7–10% of body weight is recommended for people with overweight and NASH.
Is coffee good for fatty liver?
Studies associate regular coffee with lower liver fibrosis risk, if taken without sugar.
Can I drink alcohol with fatty liver?
It is safest to avoid it or keep it to a minimum, as alcohol worsens liver damage.
Are fruits bad for fatty liver?
Whole fruit is fine in normal amounts; fruit juices and sugary drinks are the problem.
Do I need supplements?
Generally no; focus on diet and exercise, and ask your doctor before using any supplement.
Sources
- EASL–EASD–EASO · Clinical practice guidelines for the management of non-alcoholic fatty liver disease (2016)
- NIDDK · Eating, diet and nutrition for NAFLD and NASH
- NHS · Non-alcoholic fatty liver disease (NAFLD)
- Harvard T.H. Chan · The Nutrition Source: Healthy Eating Plate
This guide is for general information and does not replace medical advice. How a problem is diagnosed and treated depends on your examination and medical history. If you think you have an emergency, contact your local emergency services.