Alcohol-related liver disease

Alcohol-related liver disease is liver damage caused by heavy, prolonged drinking. It is not a single disease but a spectrum, ranging from symptom-free fatty liver to alcoholic hepatitis and cirrhosis. The good news is that stopping drinking improves the outlook at every stage, even once cirrhosis is present.

If you have been told your liver is damaged by alcohol, the single most important thing to know is this: abstinence is the most effective treatment there is, and it is never too late for it to help. This article explains how much alcohol carries risk, how the damage shows up, and what can be done at each stage.

How much alcohol harms the liver?

Almost everyone who drinks heavily develops fatty liver, but only some go on to develop alcoholic hepatitis or cirrhosis. The risk rises with the amount and the years of drinking. As a reference, liver damage has been described with sustained intakes on the order of 40 to 60 grams of alcohol a day in men and 20 to 40 grams in women over several years. Higher intake, close to 80 grams a day for 10 or more years, carries a clearly elevated risk.

To picture it, a glass of wine, a can of beer or a shot of spirits each provides about 10 to 14 grams of alcohol. A few points are worth keeping in mind:

• Women are more susceptible and develop damage at lower amounts than men.
• Drinking daily and outside of meals raises the risk compared with occasional use.
• Binge drinking (a lot of alcohol in a few hours) is also harmful.
• Other factors add up: obesity and metabolic fatty liver, hepatitis C, smoking and certain genetic traits.

There is no amount guaranteed to be safe for the liver. These figures give a sense of risk, but they do not mark a threshold below which drinking is harmless.

Nomenclature: ALD and MetALD

In current literature this condition is called ALD (alcohol-related, or alcohol-associated, liver disease). In 2023 an international consensus updated the names for fatty liver and introduced a category that is useful in practice: MetALD, describing a person who has fatty liver from a metabolic cause (excess weight, diabetes, high cholesterol) and also drinks a meaningful amount of alcohol. This is a very common situation, because the two sources of damage reinforce each other. Recognizing it matters, because treatment must address both fronts: losing weight and controlling metabolism, while also reducing or stopping alcohol.

The three stages of damage

Alcohol damage falls into three stages that can coexist in the same liver.

• Steatosis (alcoholic fatty liver). This is the earliest and most common stage. The liver accumulates fat, which can appear even after a short bout of heavy drinking. It is almost always symptom-free and shows up on an ultrasound. It is completely reversible when drinking stops.
• Alcoholic hepatitis. This is inflammation of the liver that can be mild or very severe. In its severe form it carries a high mortality and requires hospital care.
• Cirrhosis. This is advanced, irreversible scarring of the liver, the result of years of damage. It can be complicated by ascites, bleeding from esophageal varices and hepatic encephalopathy.

How does it show up, and how is it evaluated?

In the early stages there are usually no symptoms, and the damage is suspected from abnormal blood tests or an ultrasound. Some laboratory findings point toward an alcoholic cause:

• Raised liver enzymes with an AST/ALT ratio above 2, and absolute values usually below 300.
• A rise in GGT, which suggests alcohol use although it is not specific.
• A rise in the mean corpuscular volume (MCV) of red blood cells.

None of these tests confirms the diagnosis on its own. To estimate how much fibrosis (scarring) is present, non-invasive methods such as elastography (for example FibroScan) are used today. A liver biopsy is reserved for cases with diagnostic doubt or when other liver conditions coexist.

A delicate part is recognizing how much a person drinks. Many people minimize it, sometimes without realizing. A brief questionnaire, known as CAGE, helps open the conversation:

1. Have you ever felt you should cut down on your drinking?
2. Have people annoyed you by criticizing your drinking?
3. Have you ever felt guilty about drinking?
4. Have you ever had a drink in the morning to steady your nerves or cure a hangover?

Two or more yes answers make an alcohol use disorder likely. Answering honestly, in a setting free of judgment, is the first step toward getting help.

Severe alcoholic hepatitis

Severe alcoholic hepatitis is the most serious and most urgent presentation. It appears with jaundice, weakness, loss of appetite and an enlarged liver, in a person with recent heavy drinking. The bilirubin rises and the prothrombin time lengthens in proportion to how severe it is.

To measure that severity and decide on treatment, scores are used:

• The Maddrey score (discriminant function). A value above 32 identifies the severe form, with high 30-day mortality.
• The MELD score, which also predicts prognosis and is used in an equivalent way.

In selected severe cases, and only when there is no active infection or gastrointestinal bleeding, corticosteroids (prednisolone) can be given for four weeks. Their benefit is modest: the large STOPAH trial showed only a trend toward lower early mortality, with no advantage at 90 days or one year, and with more infections. That is why the decision is made carefully, case by case.

Around day 7 of treatment, the response is assessed with the Lille score. A value above 0.45 indicates that the patient is not responding to corticosteroids, in which case they should be stopped and other options considered. Pentoxifylline, once used, showed no benefit in the STOPAH trial and is no longer recommended as routine therapy.

Treatment: abstinence is the foundation

The cornerstone of treatment, at every stage, is to stop drinking completely. No medication replaces this effect. The benefit is clear and often striking:

• In alcoholic fatty liver, the fat disappears and the liver recovers.
• In alcoholic hepatitis, abstinence improves survival over the medium and long term.
• In cirrhosis, stopping drinking reduces complications and prolongs life, even when the damage is already established.

Stopping drinking is hard, and rarely depends on willpower alone. Alcohol use disorder is a disease, not a failure of character, and it can be treated. Seeking support is part of caring for your liver, not a sign of weakness. That support may include psychotherapy, support groups, mental health teams and, in selected cases, medications that reduce the urge to drink. In Chile there are treatment programs within the health system to which your doctor can refer you.

Alongside abstinence, management includes good nutrition (these patients are often malnourished), replacement of vitamins such as B1 (thiamine) and folic acid, and treatment of the complications of cirrhosis when they are present.

Liver transplant

A liver transplant is an option for people with advanced alcoholic cirrhosis who have stopped drinking and meet the criteria of transplant programs. Traditionally a prior period of abstinence, usually six months, was required.

In recent years, for very selected cases of severe alcoholic hepatitis that does not respond to medical treatment, early transplantation has been proposed, without waiting those six months. A pioneering study showed that in carefully chosen patients, with good family support and no prior episodes, early transplant greatly improved survival. It is a complex decision, made in experienced centers after a rigorous evaluation of each case.

A message without blame

Alcohol-related liver damage carries a stigma that often leads people to hide their drinking or avoid asking for help, precisely when they need it most. It is worth repeating: alcohol use disorder is a treatable disease, and the liver has a remarkable ability to recover once the cause of damage is removed. If you are worried about your drinking, or have been told your liver is affected, talking to your doctor in time can change the course of things.

See also

• Fatty liver disease (MASLD)
• Cirrhosis
• Liver transplant
• The myth of a daily drink