Yoga for fatty liver (MASLD, formerly NAFLD): liver fat, weight and activity, what the trials show, the detox claims, and the classes to follow

Common and usually silent

MASLD affects about 1 in 4 adults in the UK, usually causes no symptoms, and most people only ever have the first stage, fat without damage. It was renamed from NAFLD in 2023.

Sources 1, 2, 3

Being active lowers liver fat, even without weight loss

In 19 trials that measured liver fat on MRI scans, interval and steady exercise each lowered it by about 3 percentage points. About 150 minutes a week of brisk walking made a meaningful fall in liver fat 3.5 times as likely, whether or not people lost weight.

Sources 4, 5, 6

Yoga itself has hardly been tested

We found two small randomised trials of yoga with liver results, both graded by ultrasound: 40 women with diabetes over 8 weeks, and 37 women with prediabetes over 3 months. Neither measured liver fat on MRI, and the larger effect came from the weaker trial. A US sports medicine roundtable calls yoga's place in fatty liver uncertain.

Sources 7, 8, 9, 10

Pick yoga that moves, and walk as well

A gentle class is light activity. Guidelines ask for more than 150 minutes of moderate activity a week plus strength work twice a week, so use brisk flowing yoga and strength poses as part of that, and walk, cycle or swim too.

Sources 11, 4, 12

Scarring matters more than fat

How much scarring (fibrosis) the liver has, not how much fat, decides how people do. A scan's grade 1, 2 or 3 is a rough estimate of fat, not of damage, and NICE recommends a scarring test for everyone with MASLD.

Sources 13, 14, 15

No pose detoxes the liver

No study has tested twists or tummy compression on the liver, and no complementary therapy has been shown to treat MASLD. Yoga goes alongside medical care: if you take a statin, NICE says to keep taking it.

Sources 16, 12, 15

The new names

In 2023, liver societies renamed non-alcoholic fatty liver disease (NAFLD) metabolic dysfunction-associated steatotic liver disease (MASLD), defined as fat in the liver with at least 1 of 5 heart and metabolic risk factors such as a larger waist, raised blood sugar or high blood pressure. Inflammation is now called MASH (formerly NASH). The NHS page still uses NAFLD, and NICE renamed its guideline in July 2026. Many panel members felt the words "non-alcoholic" and "fatty" were stigmatising.

Sources 3, 2, 15

The four stages

The NHS describes four stages: fat without damage; inflammation (MASH); fibrosis, where there is damage but the liver usually still works well; and cirrhosis, severe damage that affects how well the liver works. Liver UK says that having one stage doesn't mean you'll move to the next, and that the first stage can be fully reversed.

Sources 2, 17

Who has it

About 1 in 4 adults in the UK, NICE estimates about 30%, and around half of people with type 2 diabetes. People at a healthy weight can have it too. Our exercise for fatty liver guide has the full picture, including alcohol and medicines.

Sources 1, 15, 4

The heart matters too

MASLD is defined by heart and metabolic risk factors such as a larger waist, raised blood sugar and high blood pressure, so the heart warning signs are on this page as well as the liver ones (our reading). Our exercise for fatty liver guide explains why, for most people, the heart is the bigger risk.

Source 3

What grade 1, 2 or 3 meansStrong evidence

An ultrasound report grades fatty liver as mild (grade 1), moderate (2) or severe (3) by how bright the liver looks and how hard it is to see the vessels and the diaphragm behind it. It's a judgement by eye, so it varies between scans and operators, and ordinary ultrasound misses about a third or more of mild fat: its sensitivity for fat above 5% is about 61% to 65%.

Sources 14, 18, 17

The grade isn't the stageStrong evidence

The grade estimates fat; the stage is about scarring, which ultrasound can't show. US liver guidance says a scan without visible fat doesn't rule out inflammation or scarring. What predicts how people do is scarring, which needs a separate test.

Sources 19, 20, 15

So the yoga is the same for every grade

Yoga for grade 2 fatty liver is the same as for grade 1 or 3. What changes the advice is scarring, diabetes, heart disease or cirrhosis (our reading).

Liver blood testsEmerging evidence

More than 80% of people with MASLD have normal routine liver blood tests, NICE notes, so they can't rule it out. ALT (called SGPT on some lab reports) is one of these tests. In reviews, exercise had no reliable effect on ALT.

Sources 15, 21, 22

Exercise lowers liver fatStrong evidence

The European guideline says exercise alone, without diet or significant weight loss, reduces liver fat. In 19 trials (745 people) that measured liver fat on MRI or a similar scan, interval training lowered it by 2.85 percentage points and steady moderate exercise by 3.14. A roundtable of the American College of Sports Medicine (ACSM) counted more than 25 studies, most showing falls in liver fat independent of weight loss.

Sources 4, 21, 5, 10

Even without weight lossEmerging evidence

In small trials, 4 weeks of cycling cut liver fat by 21% with no change in weight, 8 weeks of resistance exercise cut it by 13%, and in 48 inactive adults three different amounts of aerobic exercise each lowered it a little without meaningful weight loss.

Sources 23, 24, 25

How much: about 150 minutes a weekEmerging evidence

In 14 trials (551 people), exercising at 750 MET-minutes a week or more, about 150 minutes of brisk walking, made a 30% fall in MRI-measured liver fat 3.5 times as likely, whether or not people lost more than 5% of their weight. A 30% fall matters: in 7 studies, people who reached it were more likely to improve on a liver biopsy (51% against 14%). A 2026 analysis of 24 trials found combined aerobic and strength training worked best.

Sources 6, 26, 27

Weight loss does more for inflammation and scarringStrong evidence

If you're overweight, the European targets are at least 5% of body weight to reduce liver fat, 7% to 10% for inflammation and 10% or more for scarring. In a 293-person study, inflammation cleared in 90% of those who lost 10% or more, but only 30% lost even 5%. Eating less does most of the work on weight, as our yoga for weight loss guide explains, while exercise lowers liver fat whatever the scales say.

Sources 4, 19, 28

Exercise alone hasn't been shown to heal scarringEmerging evidence

In 3 controlled trials (72 people) with liver biopsies, exercise alone didn't significantly improve inflammation or scarring, and the European guideline calls it unclear whether exercise can do that on its own. The trials were small and short.

Sources 29, 4, 10

Scarring decides how people doStrong evidence

In long-term studies, the stage of scarring, not the amount of fat or inflammation, predicted deaths, liver transplants and liver problems, and the risk rose with each stage. That is why a scarring test matters more than the grade on a scan.

Sources 20, 13, 30

Yoga: two small trials, both weakStrong evidence

In 40 overweight women aged 45 to 55 with type 2 diabetes in Iran, 8 weeks of yoga three times a week lowered the ultrasound grade by about 1 grade, and ALT and AST by about 14%, against usual activity. It is weak evidence: one centre, 40 women, liver fat judged only by ultrasound grade, methods that both gave everyone a calorie-reduced diet and told them not to change their diet, an HDL rise about five times what exercise usually gives, and a journal not indexed in MEDLINE.

In 37 women with prediabetes, 3 months of yoga led to "no escalation" of fatty liver on ultrasound, with no improvement reported. Beyond these, there is one case report of a man whose grade 1 fatty liver cleared on ultrasound after 3 months of yoga, and one trial still recruiting. The grade is our grade for the claim that only these two small trials exist, not for yoga working.

Sources 7, 8, 9, 31, 32

Qigong with band trainingMixed evidence

In two small Chinese trials in people with prediabetes, Yijinjing qigong combined with elastic band training lowered liver fat on MRI or a similar scan, by 1.91 percentage points against a rise of 0.38 in one. The qigong came with resistance training, and the people weren't chosen for fatty liver, so it says little about yoga.

Sources 33, 34

What guidance says about yogaStrong evidence

The ACSM roundtable: "The appropriateness of other types of physical activity including yoga and Pilates remains uncertain." NICE says there is some evidence that exercise reduces liver fat, and the European guideline asks for activity suited to your preference and ability. Neither names yoga.

Sources 10, 15, 4

The target

More than 150 minutes a week of moderate activity, or 75 minutes of vigorous activity, plus strength work twice a week. Liver UK: "Don't worry if you can't reach the target at first. Start small and gradually build up the amount you do over time."

Sources 4, 12

How hard is yoga?Emerging evidence

Moderate activity starts at about 3 METs (3 times your energy use at rest). The 2024 Compendium of Physical Activities lists hatha yoga at 2.3 METs, vinyasa at 2.7, sun salutations at 3.5 and power yoga at 4.0, while in a lab study of 38 adults an hour of vinyasa averaged 3.6 METs, against 4.4 for brisk walking. Breathing practices use very little energy, about 1.3 METs.

So a gentle class is light activity, and only brisk flowing styles come near moderate intensity. As a rough guide (our arithmetic), the 750 MET-minutes of the liver fat trials would take about 5 hours a week of hatha yoga, against about 3 hours of brisk walking.

Sources 35, 36, 11

Our suggestion

Walk briskly, cycle or swim on most days, and do yoga 2 or 3 times a week: one class that moves (sun salutations, a brisk flow, or our walk and yoga workout) and one that builds strength. Combined aerobic and strength work did best in the trials (our editorial starting point).

Sources 6, 27, 12

When to expect a change

In the small trials, liver fat started to fall within 4 to 8 weeks of regular exercise. Keep going: our exercise for fatty liver guide notes the gains fade when people stop.

Sources 23, 24

At a healthy weight

The same exercise advice applies. Liver UK says that if you're at a healthy weight, it's important to avoid gaining weight.

Sources 12, 4

Your liver team first

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).

Sources 12, 37

What to change with fluid in your tummy

Our suggestion, from the legs up the wall page's caution ("With heart failure, or kidney or liver disease that causes fluid build-up, ask your doctor first.") and our exercise for fatty liver guide: with fluid in the tummy (ascites), leave out lying face down (locust, bow and crocodile poses), deep folds that squash the tummy, boat pose and long plank holds, and keep breathing steadily rather than holding your breath or straining. Use the chair and wall options instead.

After bleeding varices or confusion

Ask your liver team before strength work or any new exercise, as our exercise for fatty liver guide suggests.

Call 999 (911 in the US)

Call 999 for any of these, and don't drive yourself to A&E:

• You're vomiting blood (it can look bright red, brown or black, or like coffee granules) and feel unwell, confused, faint or dizzy, have rapid or shallow breathing, cold, clammy, pale skin, tummy pain or black poo.
• You have cirrhosis and you're vomiting blood, your poo is very dark or black, or you suddenly become confused or have slurred speech.
• Chest pain that feels tight or like squeezing, or spreads to your arms, neck or jaw, or severe difficulty breathing.

Sources 38, 37, 39

Chest pain or fainting: call 999

Call 999 if:

• You get sudden pain or discomfort in your chest that doesn't go away; it can feel like squeezing or pressure, burning or indigestion.
• The pain spreads to your left or right arm, or your neck, jaw, stomach or back.
• You have chest pain and feel sweaty, sick, light-headed or short of breath.
• Someone faints while exercising, can't be woken within 1 minute, or has chest pain or a pounding, fluttering or irregular heartbeat.

Sources 40, 41

Urgent GP appointment or NHS 111

• Your skin or the whites of your eyes turn yellow (jaundice), perhaps with itchy skin, darker pee and paler poo.
• You have cirrhosis and you're more short of breath than usual, or your tummy, legs, ankles or feet are swelling.
• You vomited blood, but it has stopped and you have no other symptoms.

Sources 42, 37, 38

Tell a doctor straight away

Liver UK lists these signs of more advanced liver disease:

• Yellowing of the skin and the whites of the eyes.
• Bruising easily.
• Dark urine.
• A swollen tummy (ascites), or swollen legs, ankles or feet.
• Weight loss you can't explain.
• Vomiting blood, or dark, black, tarry poo.
• Confusion, memory problems, mood changes or poor judgement.
• Itchy skin.

Source 43

See a GP

• You think you might have MASLD, or you're at higher risk: overweight, especially around the waist, type 2 diabetes, PCOS, high blood pressure or cholesterol, or over 50.
• You've been told you have fatty liver but haven't been offered a test for scarring (NICE recommends one for everyone with MASLD).
• You're worried about how much you drink, or want help to stop.

Sources 2, 15

With cirrhosis or diabetes

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).

Source 12

Keep taking your medicines

NICE: "Be aware that people with MASLD who are taking statins should keep taking them." Yoga goes alongside the care your GP or liver team recommends, never in place of it.

Source 15

Unusual breathlessness

Call 999 or go to A&E (accident and emergency) straight away for severe difficulty breathing (gasping, choking or not able to get words out), a chest that feels tight or heavy, pain that spreads to your arms, back, neck and jaw, lips or skin turning very pale, blue or grey, or sudden confusion. If you're more short of breath than usual, or your heart is racing, fluttering or skipping beats, contact NHS 111.

Source 44

During yoga

A joint pain that is sharp, gets worse during a session, lingers into the next day or changes how you move is a reason to use an easier version, and to see a GP or physiotherapist if it keeps happening (the rule in our plans). Muscle soreness for a day or two after something new is normal. In a hot class, stop if you feel dizzy, sick or unwell; our hot yoga guide lists the signs of heat illness.

You can say no to any hands-on adjustment, and a teacher registered with Yoga Alliance must get your explicit consent each time.

Before you start

The NHS advises getting advice from a healthcare professional first if you have a health problem, an injury or symptoms, or have recently had a heart attack or an operation.

Source 45

"Twists detox or massage the liver"Strong evidence

We found no study of twists or tummy compression on liver function, blood flow or fat in 97 records. Liver fat falls with exercise of any kind, twists or not.

Sources 16, 5

"Kapalbhati cures fatty liver"Strong evidence

No trial has tested kapalbhati, or any breathing practice on its own, on liver fat, enzymes or grade; it appears only as one part of a trial that hasn't reported. Breathing practices also use very little energy, about 1.3 METs.

Sources 46, 32, 35

"Yoga can reverse fatty liver"Mixed evidence

The evidence is one case report and one small, weak 8-week ultrasound trial. Exercise in general lowers liver fat, but exercise alone hasn't been shown to reverse inflammation or scarring.

Sources 31, 8, 29

"A liver detox or cleanse will help"Strong evidence

Liver UK: "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." A review of detox diets found very little clinical evidence for them.

Sources 12, 47

"Grade 3 fatty liver is the worst stage"Strong evidence

The grade is an estimate of fat on an ultrasound; the stage is about scarring, which ultrasound can't show and which is what predicts how people do.

Sources 14, 19, 20

"Normal liver blood tests mean your liver is fine"Strong evidence

More than 80% of people with MASLD have normal routine liver blood tests, NICE notes.

Source 15

"Exercise only helps if you lose weight"Strong evidence

Liver fat fell with exercise whether or not people lost more than 5% of their weight.

Sources 6, 23, 4

"Gentle yoga is enough exercise for your liver"Emerging evidence

A gentle class is light activity, about 2.3 METs. The liver fat trials used about 150 minutes a week of moderate activity, such as brisk walking.

Sources 11, 6