Your liver does not need a cleanse: what Australian guidance says

A persistent idea holds that the liver slowly clogs with toxins and needs a periodic cleanse to clear it out. The idea gets the organ backwards. The liver is the part of the body that does the clearing. The Liver Foundation describes it as working 24 hours a day and carrying out more than 500 functions, one of which is breaking down alcohol, other drugs and chemicals.

None of the Australian guidance read for this article recommends a cleansing routine of any kind. What it describes is plainer: body weight, physical activity, the overall pattern of eating, and alcohol. Coffee gets a mention too.

Body weight

Much of what is known about habits and the liver comes from research on fatty liver disease, the most common liver condition in Australia. The 2024 consensus statement for GPs from the Gastroenterological Society of Australia (GESA) describes obesity as intimately associated with the condition, with weight carried around the abdomen bringing higher risk. It recommends weight loss for people who have fatty liver together with overweight or obesity, and reports that the greatest benefit in studies was seen in those who lost more than 10% of their weight.

Smaller changes registered as well. The statement cites research in which a 5 kg reduction in weight was associated with a 39% probability that liver inflammation resolved and a 31% probability that scarring improved over one and a half to two years. The Liver Foundation's public information on fatty liver uses a range of 5 to 10% of body weight.

These figures describe groups of people with diagnosed fatty liver who took part in studies. They are not a forecast for any one person. A GP or an accredited practising dietitian can say whether weight loss is appropriate and how to go about it safely.

Physical activity

The Liver Foundation's page on exercise calls physical activity one of the main treatments for fatty liver disease. It points to the national guidelines for adults, which recommend accumulating each week either 2½ to 5 hours of moderate activity, such as brisk walking, golf or swimming, or 1¼ to 2½ hours of vigorous activity, such as jogging or fast cycling.

Muscle-strengthening activity is recommended on at least two days a week. The Foundation's examples include squats, lunges and lifting weights. Household jobs that involve lifting, carrying or digging are on its list as well.

Two practical points come from the same page. Any physical activity is better than none. And it is sensible to build up gradually. In its advice for people newly told they have fatty liver, the Foundation suggests aiming for 30 to 45 minutes of moderate exercise five times a week. People with a heart condition should check with their GP before a big step up.

The pattern of eating

Australian liver guidance talks about overall patterns of eating, not single "liver foods". The Liver Foundation's example is the Mediterranean diet. In its description, that means lots of vegetables, fruit, unprocessed cereals, legumes, olive oil, nuts and seeds. Fish, seafood, eggs, cheese, yoghurt and poultry appear in moderate quantities. Red meat, processed meats and sweets are kept to a minimum.

The Foundation's guide to eating for your liver states that this way of eating has been found to reduce liver fat. The same guide advises limiting saturated fat and sugar, and names sugary drinks, chips, cakes and takeaways. Its reasoning is that too much sugar and saturated fat in the diet can cause fat to build up in the liver. It also recommends small regular meals over skipped meals or overeating, and six to eight glasses of fluid a day, preferably water.

People with diabetes, kidney disease or advanced liver disease may have different dietary needs, and should take individual advice from their GP or a dietitian.

Alcohol

The national guideline comes from the National Health and Medical Research Council, and GESA and the Liver Foundation both state it the same way. Healthy men and women should drink no more than 10 standard drinks a week and no more than 4 standard drinks on any one day. GESA adds that the risk of harm is lower when less alcohol is consumed.

A standard drink is smaller than many people assume. It contains 10 grams of pure alcohol. On the Liver Foundation's alcohol page, that equates to 100 mL of wine, 285 mL of full-strength beer, 425 mL of light beer or 30 mL of spirits. A 200 mL glass of wine therefore counts as two. The Foundation also advises keeping at least two to three days each week free of alcohol.

The guideline is written for healthy adults. For anyone with liver disease of any sort, the Liver Foundation says it is best not to drink at all, and that in advanced disease even a small amount can make things worse. GESA is firmer still about cirrhosis, where its advice is complete abstinence. It also notes that some studies have linked an average of 10 to 30 grams of alcohol a day, which is one to three standard drinks, with a higher risk of advanced scarring in people who already have fatty liver. Anyone with a liver condition should ask their GP what limit applies to them.

Coffee

Coffee is the one item on this list that people tend to be pleased about. In its advice for people with fatty liver, the Liver Foundation says research suggests that drinking three to four cups a day is beneficial. It associates that amount with a lower risk of dying from cardiovascular disease, diabetes and liver disease, and it links up to four cups a day with a lower risk of cirrhosis and liver cancer. The Foundation adds a caution about not overdoing the milk.

The GESA statement does not mention coffee, and neither source presents it as a treatment. For people who already drink coffee, the Foundation's advice gives no liver-related reason to stop.

How it fits together

Set side by side, the guidance is unglamorous. It is also familiar, because the same habits are recommended for the heart and for blood sugar. The GESA statement notes that cardiovascular disease and chronic kidney disease are common in people with fatty liver and asks GPs to consider them together. The Liver Foundation's list of what helps in fatty liver adds two more items: managing blood sugar and cholesterol, and not smoking.

GESA recommends that GPs assess the liver in adults with type 2 diabetes, obesity, or two or more metabolic risk factors such as high blood pressure. People in those groups can raise it at their next appointment. For everyone else, the liver will go on doing its own clearing. What the guidance addresses is how much work it is handed.

Sources

1. Liver Foundation, About the liver.
2. Gastroenterological Society of Australia, Recommendations for the assessment of metabolic dysfunction-associated fatty liver disease (MAFLD) in primary care: a consensus statement (2024).
3. Liver Foundation, Fatty liver disease (reviewed June 2025).
4. Liver Foundation, Exercising for your liver.
5. Liver Foundation, Your doctor says you have fatty liver disease. Now what? (2023).
6. Liver Foundation, Eating for your liver.
7. Liver Foundation, Alcohol – safe guidelines and alternatives.