Exercise guide
Fatty liver disease is a build-up of fat in the liver that goes with things like a larger waist, type 2 diabetes or high blood pressure. Since 2023 it has been called metabolic dysfunction-associated steatotic liver disease (MASLD), replacing non-alcoholic fatty liver disease (NAFLD), and Liver UK, the charity formerly called the British Liver Trust, estimates it affects about 1 in 4 adults in the UK. Exercise is one of the main treatments: in trials it lowered liver fat even when people didn't lose weight, though whether exercise on its own reverses liver scarring isn't known.
This guide explains the new names, how much exercise to do and which kinds work, a strength circuit taken from a trial, how much weight loss helps inflammation and scarring, alcohol, type 2 diabetes and cirrhosis, medicines, and the warning signs that need urgent help.
In 12 trials, exercise reduced liver fat with "minimal or no weight loss". In 19 trials that measured liver fat with MRI (magnetic resonance imaging) scans, interval training and steady moderate exercise each cut it by about 3 percentage points, for example from 15% of the liver to 12% (our example). The Canadian obesity guideline gives this finding its top grade.
Guidelines recommend at least 150 minutes a week of moderate activity, or 75 minutes of vigorous activity, plus strength exercises twice a week and less time sitting. A 2023 analysis (read as an abstract) suggested about 150 minutes a week of moderate exercise, such as brisk walking, made a 30% drop in liver fat more likely; the evidence that a drop that size matters comes mainly from drug trials.
Steady cardio, strength training and interval training all lower liver fat by similar amounts. Strength training uses less energy, so it suits people who find cardio hard. Guidelines prefer cardio and strength together.
If you're overweight, losing at least 5% of your weight reduces liver fat, 7% to 10% improves inflammation, and 10% or more improves scarring (fibrosis). Exercise alone hasn't been shown to reverse scarring: the biopsy trials are few and small.
MASLD raises the risk of heart disease, type 2 diabetes and kidney disease, and in population studies more people with it died of heart disease than of liver disease. If you take a statin, keep taking it: NICE (the National Institute for Health and Care Excellence) and the European guideline say statins are safe with MASLD.
Keep within 14 units a week, spread over 3 or more days. With advanced scarring or cirrhosis, stop drinking completely, and if you drink heavily, get medical help to stop, because stopping suddenly can be dangerous.
In 2023, an international panel of 236 experts from 56 countries renamed NAFLD as MASLD, and its inflamed form, non-alcoholic steatohepatitis (NASH), as metabolic dysfunction-associated steatohepatitis (MASH). "Non-alcoholic" and "fatty" were felt to be stigmatising by 61% and 66% of the panel. 98% of people in a large European NAFLD registry met the new MASLD definition, so the earlier research still applies.
MASLD means fat in the liver, seen on a scan or biopsy, plus at least one of these risk factors and no other cause. These are the international cut-offs for the diagnosis; our body mass index (BMI) and waist-to-height ratio calculators give the UK healthy ranges.
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If you have MASLD and regularly drink more (20 to 50 g of alcohol a day for women and 30 to 60 g for men, about 17 to 44 and 26 to 52 UK units a week in our conversion), it's called MetALD (metabolic and alcohol-related liver disease), which carries a higher risk of death than MASLD. Above that, it's alcohol-related liver disease, where the aim of treatment is to stop drinking.
The NHS describes 4 stages: fat in the liver without damage; MASH, with inflammation; fibrosis, scarring, though the liver usually still works well; and cirrhosis, severe scarring that can lead to liver failure or liver cancer. The NHS says most people only have the first stage, and the European guideline says about 10% to 30% of people with fat alone go on to develop inflammation and more advanced disease. The stage of scarring, not the amount of fat, is the strongest predictor of liver problems.
Scan reports often grade the amount of fat (S1 to S3, or grade 1 to 3) separately from scarring (F0 to F4). Scarring, not the amount of fat, predicts how the liver does. An ordinary ultrasound can miss milder fatty liver and only roughly grades the fat.
Liver UK (formerly the British Liver Trust) estimates MASLD affects about 1 in 4 adults in the UK, and NICE says more than 3 million people in the UK have MASH. The European guideline puts it at over 30% of adults worldwide. More than half of people with type 2 diabetes have it: 55.5% in a review of 80 studies.
You're more likely to have MASLD if you're overweight, especially around the waist, eat an unhealthy diet or aren't very active, have type 2 diabetes, polycystic ovary syndrome (PCOS), high blood pressure or high cholesterol, or are over 50. Type 2 diabetes and belly fat have the strongest effect on whether it gets worse, and men over 50, women after the menopause and people with several risk factors are more likely to develop scarring. MASLD also happens at a healthy weight: in about 4% of people in the US and up to 19% in Asia.
MASLD is linked with a higher risk of heart and circulation disease (about 40% more non-fatal events), about twice the risk of type 2 diabetes, and more kidney disease and sleep apnoea. NICE also lists high blood pressure. In population studies, deaths from heart disease outnumbered deaths from liver disease by about 4 to 1, so exercise's benefits for the heart matter as well as its effect on the liver.
MASLD usually causes no symptoms; some people feel very tired or have discomfort under the right ribs, and it's often found by chance. NICE recommends testing everyone with MASLD for advanced scarring, for example with the enhanced liver fibrosis (ELF) blood test, and says routine liver blood tests shouldn't be used to rule MASLD out. European guidance uses a score from routine blood tests (FIB-4) and then a liver stiffness scan such as FibroScan. The NHS suggests check-ups at least once a year and tests every 2 to 3 years.
The menopause is linked with about 2.4 times the odds of MASLD, the definition uses lower BMI and waist cut-offs for people of Asian ethnicity, and some gene variants raise the risk of scarring. We found no evidence that the exercise advice should differ for women and men.
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A review of 12 trials found exercise lowered liver fat with "minimal or no weight loss", at amounts below the usual exercise advice for obesity. In a small trial of 19 inactive adults with obesity, 4 weeks of cycling cut liver fat by 21% and deep belly fat by 12% while their weight stayed the same. The Canadian obesity guideline gives this finding its top grade.
Across 19 trials (745 people, MRI scans), high-intensity interval training (HIIT) cut liver fat by 2.85 percentage points (low-certainty evidence) and steady moderate exercise by 3.14 (moderate certainty), with no real difference between them. Neither weekly minutes nor energy burned predicted the change. A second review of 24 studies (1,014 people) found falls of about 3 to 5 percentage points and better fitness.
A 2023 analysis (read as an abstract) suggested about 150 minutes a week of moderate exercise, such as brisk walking, made a 30% drop in liver fat more likely: across 14 trials (551 people), people who exercised were 3.5 times as likely to reach it, whether or not they lost more than 5% of their weight, and smaller amounts of exercise didn't make a clear difference.
The evidence that a 30% drop matters comes mainly from drug trials, where it tracked improvements in liver tissue: in 7 trials (5 of medicines, 1 of a supplement and 1 of exercise), 51% of people with a 30% drop had a better biopsy, against 14% of those without one. The European guideline accepts the link but warns it may not hold for every treatment.
A review comparing the two found aerobic and strength training both reduced liver fat, with strength training using less energy, so it may suit people with low fitness. In a small UK trial, 8 weeks of a machine circuit 3 times a week cut liver fat by 13% (from 14.0% to 12.2% of the liver) with no change in weight. Across 11 trials (395 people), 7 of the 8 that scanned the liver found less fat, with no serious side effects.
In a trial of 48 inactive adults, three aerobic programmes over 8 weeks (45 to 60 minutes, 3 to 4 days a week, at 50% to 70% of peak fitness) lowered liver fat by similar small amounts, and in the interval training review neither minutes nor energy burned predicted the fall. But the 30% drop needed about the guideline amount. Our reading: do at least 150 minutes a week, in whatever form you'll keep up.
Liver fat can start to fall within weeks: after 4 weeks of cycling and 8 weeks of strength training in small trials. The typical effective programme in reviews ran for about 12 weeks: aerobic exercise for about 40 minutes 3 times a week, or strength training for about 45 minutes 3 times a week.
People with MASLD usually have low fitness, and training improves it. In observational data with more than 10 years of follow-up, people with fatty liver who were regularly active had lower death rates overall and from heart disease. In small studies, blood vessel function improved after 16 weeks of aerobic training, but the gain had gone a year after people stopped.
Whether exercise alone improves inflammation or scarring isn't known. Three controlled trials with biopsies (72 people) found no clear improvement, and in the few positive biopsy trials (under 60 people in all) people also lost weight. A Cochrane review of 59 lifestyle trials found too few events to judge effects on cirrhosis, liver cancer or death. Here, weight loss carries the evidence: losing 10% or more has been linked with scarring improving.
The 2024 European guideline (from the European associations for the study of the liver, diabetes and obesity: EASL, EASD and EASO) recommends physical activity to reduce liver fat, tailored to what you like and can do, preferably more than 150 minutes a week of moderate activity or 75 minutes of vigorous activity. A roundtable of the American College of Sports Medicine (ACSM) recommends the same for everyone with fatty liver, and the NHS says at least 150 minutes a week. The American Association for the Study of Liver Diseases (AASLD) encourages people to exercise as much as possible.
Liver UK advises strength activities twice a week, such as lifting weights, using resistance bands or carrying heavy shopping, and says combining aerobic and strength exercise offers the greatest health benefits. The European guideline and the ACSM also prefer the combination.
Moderate activity should make you feel warmer and slightly out of breath: you can still talk, but not sing. If 150 minutes sounds like a lot, Liver UK suggests breaking it into 10-minute sessions and building up.
In trials, effective aerobic programmes were about 40 minutes 3 times a week, and strength programmes about 45 minutes 3 times a week, for about 12 weeks. A 2025 review of strength training suggests at least 8 to 10 exercises for the whole body at 60% to 80% of the most you can lift once, 3 times a week for 12 weeks or more. The circuit below comes from a trial that used 8 machines.
Liver UK says to start small and build up gradually. Our suggestion: in week 1, a 10-minute brisk walk on most days and two short strength sessions (2 rounds of the home circuit below). Add about 5 minutes to each walk every week, and by weeks 8 to 12 aim for 150 minutes a week plus 2 or 3 strength sessions.
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Time spent sitting predicts MASLD in its own right. In observational studies, each extra hour of sitting went with about 1.2% more liver fat, and people with fatty liver walked about 10 km a week less than people without it. Liver UK lists reducing time spent sitting as one of the main treatments; our suggestion is to get up for a few minutes every 30 to 60 minutes.
Gains fade when people stop exercising, as the blood vessel studies above showed. Our suggestion: treat exercise as part of your treatment for good, not a short course.
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Any of these at a pace that makes you warmer and slightly out of breath (Liver UK), in bouts of 10 minutes or more. The recumbent bike suits a higher weight or a sore back or knees (our suggestion), and jogging is optional rather than needed for liver fat.
3D demoTreadmill walkingBeginner · Cardio machine
3D demoStationary cyclingBeginner · Cardio machine
3D demoRecumbent exercise bikeBeginner · Cardio machine
3D demoElliptical trainerBeginner · Cardio machine
3D demoIndoor Rowing (Rowing Machine)Beginner · Cardio machine
3D demoTreadmill joggingIntermediate · Cardio machineThe protocol of Hallsworth 2011, a UK trial in which 8 weeks of this circuit cut liver fat by 13% without weight loss; the reps are our translation. Breathe out on each effort rather than holding your breath.
The trial used a machine for every move. Where your gym has no machine, the standing press, dumbbell curl and calf raise shown here are our suggested swaps, and a machine calf press works too.
3D demoChest press machineBeginner · Strength machine
3D demoLat pulldownBeginner · A cable machine
3D demoLeg extensionBeginner · Strength machine
3D demoMachine leg curlBeginner · Strength machine
3D demoStanding overhead pressIntermediate · A barbell + A dumbbell
3D demoDumbbell biceps curlBeginner · A dumbbell
3D demoTriceps pushdownBeginner · A cable machine
3D demoSlow calf raiseBeginner · A wallOur editorial swaps for the trial's 8 machines: do the 8 movements as a circuit, 10 to 15 reps each, 2 rounds building to 3, at least twice a week as Liver UK advises and 3 times if you can. Sit-to-stands lead on to goblet squats, and wall push-ups to incline push-ups, as you get stronger.
3D demoSit to stand from a chairBeginner · A bench or box
3D demoDumbbell goblet squatIntermediate · A dumbbell
3D demoWall push-upBeginner · A wall
3D demoIncline push-upBeginner · A bench or box
3D demoBand rowBeginner · A band + An anchor point
3D demoGlute bridgeBeginner · No equipment
3D demoStep-upBeginner · A step
3D demoShoulder press with a bandBeginner · A band3D demoDumbbell biceps curlBeginner · A dumbbell3D demoSlow calf raiseBeginner · A wallUse these to break up long spells of sitting (a minute or two every 30 to 60 minutes, our suggestion), or with cirrhosis, frailty or a very high weight, as your liver team advises.
3D demoStanding marchBeginner · No equipment
3D demoSeated marchBeginner · A bench or box
3D demoSit to stand, pushing on the thighsBeginner · A bench or box
3D demoSeated knee extension (chair)Beginner · A bench or box + Something with weight
3D demoSeated dumbbell curlBeginner · A dumbbell + A bench or boxIf you're overweight, the European guideline's targets are a lasting loss of at least 5% of your weight to reduce liver fat, 7% to 10% to improve inflammation, and at least 10% to improve scarring. The AASLD says 3% to 5% improves liver fat, and Liver UK that losing 5% to 10% can help control the condition and may reverse some liver damage. For someone weighing 90 kg, 5% is 4.5 kg and 10% is 9 kg (our arithmetic).
In a Cuban study of 293 people with biopsy-confirmed MASH on a year of lifestyle change, 90% of those who lost 10% or more of their weight had their MASH resolve, and 45% had less scarring. It wasn't a randomised trial, and only 30% of people lost 5% or more.
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Weight loss is hard to reach and keep: in structured programmes, 10% or fewer of people reach effective weight loss at a year, and people tend to regain weight, ending up about 5% lighter with some liver fat coming back. Exercise lowers liver fat whatever the scales say. Our weight loss guide covers how much exercise helps with weight, and weight loss injections.
If your weight is in the healthy range, diet and exercise are still recommended to reduce liver fat, and in one trial losing 3% to 5% led to remission in half of people without obesity. Liver UK says: "No matter what you weigh, improving your diet and activity levels can help lower the amount of fat in your liver and improve MASLD." It also advises avoiding weight gain.
The European guideline favours a Mediterranean-style diet and avoiding sugary drinks and ultra-processed food. Liver UK says there isn't a special diet that cures MASLD.
The NHS and Liver UK advise no more than 14 units a week, spread over 3 or more days, with 2 to 3 alcohol-free days and not too much in one go. The European guideline discourages alcohol for anyone with fatty liver, especially at moderate or high intake, and says emerging evidence doesn't support any protective effect of light or moderate drinking. With advanced scarring (fibrosis stage 3) or cirrhosis (stage 4), stop drinking completely.
Regularly drinking about 17 to 44 units a week for women, or 26 to 52 for men, alongside MASLD risk factors is classed as MetALD (our conversion of the guideline's grams), which carries more risk; more than that counts as alcohol-related liver disease. If you drink heavily, get medical help before you stop: the NHS warns that stopping suddenly can be very dangerous, and your GP or an alcohol service can help.
Smoking makes liver disease progress faster and raises the risk of heart disease and liver cancer. Liver UK says stopping is even more important if you have MASLD.
Liver UK says: "There are no complementary or alternative medicines that have been shown to treat or prevent MASLD. They can sometimes harm your liver, even if they come from natural ingredients." It advises talking to your doctor before taking any vitamins or supplements.
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More than half of people with type 2 diabetes have MASLD, and diabetes is one of the strongest drivers of scarring. The exercise advice is the same; our type 2 diabetes guide covers avoiding hypos if you take insulin or a sulfonylurea. The European guideline recommends checking people with type 2 diabetes for scarring.
The NHS advises people with cirrhosis to exercise regularly and not to drink alcohol. In 11 small trials, exercise was feasible and safe in cirrhosis without complications such as fluid build-up or bleeding, and may lower the raised pressure in the liver's blood vessels, but there's no evidence yet for more advanced cirrhosis. The European guideline suggests keeping muscle with plenty of protein and physical activity, and Liver UK says to talk to your doctor before trying to lose weight. Our suggestion: ask your liver team what exercise suits you, especially if you've had fluid in your tummy, bleeding varices or confusion.
NICE says people with MASLD who take statins should keep taking them, and the European guideline says statins are safe in MASLD, including in cirrhosis without complications, and should be used to lower heart risk as usual.
Liver UK says there are currently no specific medicines available in the UK to treat MASLD, but that they may be available in the near future. NICE lets specialists consider pioglitazone or vitamin E for advanced scarring, and GLP-1 (glucagon-like peptide-1) medicines are used for type 2 diabetes and obesity. The European guideline recommends lifestyle change alongside any medicine.
NICE recommends a liver ultrasound for children and young people with type 2 diabetes or metabolic syndrome, and referral to a children's liver specialist if MASLD is suspected. Our children's guide covers how much activity they need.
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Five 30-minute cardio sessions, or three longer ones, reach the 150 minutes; add 2 or 3 strength sessions. The beginner home workout, a 6-move circuit done twice, is the closest match to the trial circuit. The intervals workout is optional (check with your GP first if you have heart disease), and the chair workout suits cirrhosis or frailty, as your team advises.
A steady 30 to 45 minute cardio session at talk-but-not-sing pace: walk, cycle, row or cross-train, counting toward weekly activity guidelines.
40 minBeginner3 movesCardio machine, A wallA 25-minute standing cardio circuit with no jumping: marching, step jacks, sit-to-stands, punches, step-ups and wall push-ups, with a seated option for most moves.
25 minBeginner9 movesA bench or box, A stepA 10-minute routine for straight after a meal: an easy walk, a few simple standing moves from blood sugar trials, then a short walk to finish.
10 minBeginner6 movesCardio machine, A bench or boxA gentle 20-minute beginner home workout with a chair, a wall and a band: sit-to-stands, wall push-ups, band rows, step-ups and dead bugs.
20 minBeginner11 movesA bench or box, A wallA full-body resistance band workout: squats, presses, pull-aparts, band walks, good mornings and flyes.
25 minBeginner7 movesA band, An anchor pointA beginner full-body gym workout: goblet squats, dumbbell bench press, lat pulldowns, Romanian deadlifts and dead bugs, with sets, reps and rest.
45 minBeginner12 movesCardio machine, A bandA 20-minute full-body dumbbell workout: two supersets of squats, rows, Romanian deadlifts and push-ups. Twice a week covers the minimum dose.
20 minBeginner8 movesA dumbbell, A bench or boxA 25-minute interval session on a bike or rower: one-minute hard efforts with two minutes easy, building from 4 to 8 rounds.
25 minIntermediate1 movesCardio machineA 3-minute standing break to repeat every 30 to 60 minutes at your desk: sit-to-stands, calf raises, marching, an upper-back turn and chin tucks.
3 minBeginner5 movesA bench or box, A wallA 20-minute seated workout for older adults who cannot stand for long: marching, leg and arm strength, posture, and sit-to-stands that lead back to standing.
20 minBeginner11 movesA bench or box, Something with weightIf you're overweight, the weight loss plan combines 3 strength days, cardio and daily steps, building to 200 to 250 minutes a week.
A 12-week workout plan for weight loss: three strength days, two cardio days and daily steps, building to 200 minutes a week, with honest results.
3 training days45 minBeginner7 days a weekA full week that mixes intensities: three strength days, two cardio days, a mobility day and an easy day, never seven hard days.
3 training days45 minBeginner2 days a weekYour first four weeks: two, then three short strength sessions a week at home plus walks, building gently to a full routine.
2 training days20 minBeginner3 days a weekA 12-week exercise plan for over-65s: strength and balance three times a week, short balance sessions and daily walks, based on falls-prevention trials.
3 training days40 minBeginnerCall 999 for any of these, and don't drive yourself to A&E:
Liver UK lists these signs of more advanced liver disease:
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Fatty liver on its own is not one of the things the ACSM uses to decide who needs a medical check before exercise; what counts is how active you are now, symptoms such as chest pain on exertion, known heart, kidney or metabolic disease such as diabetes, and how hard you plan to exercise. Because most people with MASLD also have diabetes, heart or other metabolic conditions, the ACSM's fatty liver roundtable says medical advice may be needed before a formal exercise programme. The NHS advises speaking to a GP first if you haven't exercised for some time or have a medical condition.
With cirrhosis, ask your liver team what exercise suits you before starting or stepping up (our suggestion), and talk to your doctor before trying to lose weight, as Liver UK advises. With type 2 diabetes on insulin or a sulfonylurea, follow the hypo advice in our type 2 diabetes guide. Stop and rest if you get chest pain, unusual breathlessness, dizziness or palpitations (our suggestion).
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MASLD is driven by metabolic factors such as weight around the waist, type 2 diabetes, high blood pressure and blood fats, and Liver UK estimates it affects about 1 in 4 adults in the UK. The old "non-alcoholic" label was dropped partly because many felt it was stigmatising.
Liver fat fell with "minimal or no weight loss" in 12 trials, and 4 weeks of cycling cut liver fat by 21% with no change in weight. In the 2023 analysis, exercise made a 30% drop more likely whether or not people lost more than 5% of their weight.
MASLD happens at a healthy weight too, in about 4% of people in the US and up to 19% in Asia, and diet and exercise still help reduce the fat.
Most people never get serious liver damage, but some develop scarring, and MASLD raises the risk of heart disease, type 2 diabetes and kidney disease. In population studies, deaths from heart disease outnumbered deaths from liver disease.
Strength training reduced liver fat about as well as aerobic exercise with less effort, and interval training matched steady cardio. Guidelines prefer cardio and strength together.
Liver UK says no complementary or alternative medicine has been shown to treat or prevent MASLD, and some can harm your liver. Its main treatments are a healthy diet, being more active and, if you need it, losing weight.
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NICE says routine liver blood tests shouldn't be used to rule MASLD out, and liver enzymes can be normal even with advanced disease. Ask about a scarring test, such as the ELF blood test or a FibroScan.
That isn't proven: biopsy trials of exercise alone are few and small and found no clear change. Losing 10% or more of your weight is what has been linked with scarring improving.
The European guideline says emerging evidence doesn't support a protective effect of light or moderate drinking, especially with metabolic risk factors, and it discourages alcohol in fatty liver disease. With advanced scarring or cirrhosis, stop completely.
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The one you'll keep doing: brisk walking, cycling, swimming, strength training and interval training all reduce liver fat by similar amounts. Guidelines prefer aerobic exercise plus strength training at least twice a week. Strength training is a good start if you find cardio hard, because it takes less effort.
At least 150 minutes a week of moderate activity such as brisk walking, or 75 minutes of vigorous activity, plus strength exercises at least twice a week. A 2023 analysis suggested about 150 minutes a week of moderate exercise made a meaningful drop in liver fat more likely. Ten-minute bouts count, and more is better.
Exercise reliably reduces the fat in your liver and improves your fitness and heart health. Whether exercise alone reverses inflammation or scarring isn't proven yet; losing weight, if you're overweight, is what has been shown to help: 7% to 10% for inflammation and 10% or more for scarring. Liver UK says losing 5% to 10% may reverse some liver damage.
Yes. In trials, liver fat fell with "minimal or no weight loss", and people who exercised were 3.5 times as likely to cut their liver fat by 30% or more whether or not they lost more than 5% of their weight. Exercise also reduced deep belly fat in some trials, and it improves your fitness.
If you're overweight, guidelines suggest losing at least 5% of your weight to reduce liver fat, 7% to 10% to improve inflammation, and 10% or more to improve scarring. For someone weighing 90 kg, 5% is 4.5 kg and 10% is 9 kg. If you're a healthy weight, aim not to gain weight and stay active.
Yes: in a 2023 analysis, about 150 minutes of brisk walking a week was the amount at which exercise made a meaningful fall in liver fat more likely. Brisk means you feel warmer and slightly out of breath. Split it into walks of 10 minutes or more if that's easier.
Both work. Strength training reduced liver fat about as well as aerobic exercise while using less energy, and in one trial a circuit 3 times a week cut liver fat by 13% in 8 weeks without weight loss. HIIT lowered liver fat as much as steady cardio, often in less time; check with your GP first if you have heart disease.
Weeks rather than years: in small trials, liver fat fell after 4 weeks of cycling and 8 weeks of strength training, and most effective programmes ran for about 12 weeks. Changes in inflammation and scarring take longer and come mainly with weight loss. The benefits fade if you stop, so keep going.
They're names for the same condition: in 2023, non-alcoholic fatty liver disease (NAFLD) was renamed metabolic dysfunction-associated steatotic liver disease (MASLD), and NASH, the inflamed form, became MASH. MASLD means fat in the liver plus at least one risk factor such as a larger waist, raised blood sugar, blood pressure or blood fats. Nearly everyone with NAFLD meets the new definition, so the research still applies.
Yes. MASLD can happen at a healthy weight, in about 4% of people in the US and up to 19% in Asia. Diet and exercise still help reduce liver fat whatever you weigh.
If you drink, keep within 14 units a week, spread over 3 or more days, with alcohol-free days and not too much in one go. The European guideline discourages alcohol in fatty liver disease and says to stop completely if you have advanced scarring or cirrhosis. Regularly drinking about 17 to 44 units a week (women) or 26 to 52 (men) alongside metabolic risk factors is classed as MetALD, which carries more risk, and more than that as alcohol-related liver disease.
Most people with fatty liver only ever have fat in the liver without damage, but some develop inflammation and scarring, which can lead to cirrhosis. Scan reports often grade the amount of fat; what matters more is whether there's scarring, which a blood test such as ELF or a FibroScan can check. MASLD also raises the risk of heart disease, which is one reason exercise matters.
Exercise education, not a diagnosis or treatment plan, and clinical review of these guides is pending. Stop and get advice for chest pain, unusual breathlessness, dizziness or fainting, or new pain, and check with your doctor or midwife first if they have told you to limit activity. Health disclaimer.
