What is Alcoholic Liver Disease?
Can you explain the progression of alcoholic liver disease and how regular alcohol consumption can lead to this condition?
Alcoholic liver disease covers a spectrum of disorders - from the fatty liver to episodes of alcoholic
hepatitis and culminating in cirrhosis, which is the end-stage and irreversible form of liver injury related
to the alcohol consumption.
The liver tolerates some alcohol consumption, but as the consumption of alcohol increases, it leads to
disorders of the metabolism of the liver. It varies with individuals. The initial stage involves the
accumulation of fat in the liver cells, also known as fatty liver. If the consumption of alcohol persists, it
can lead to alcoholic hepatitis. With continued and increased alcohol consumption, the liver disease may
progress to severe irreversible damage to the liver known as cirrhosis, described by progressive scarring and
nodules.
The amount and duration of the individual’s alcohol intake are the highest risk factors for the development of
alcoholic liver disease. The type of alcohol plays a lesser role. Women are more susceptible than men. Obesity
and high-fat diet also increase the risk of alcoholic liver disease. Concurrent hepatitis B/C infection is
associated with more severe disease. Many other different factors, such as genetic, metabolic, environmental
and immunological, all play a role in alcoholic liver disease.
One "standard" drink (or one alcoholic unit) contains about 14 grams of pure alcohol, which is found in
approximately a can of beer, a glass of wine or a shot of spirits (e.g., whiskey, gin).
At-risk drinking is defined as:
- Men: over 14 drinks/week or more than 4 drinks/occasion (Binge drinking)
- Women: over 7 drinks/ week or more than 3 drinks/occasion (Binge drinking)
Significant drinking is defined as more than 21 drinks/week for Males, more than 14 drinks/week for Females and heavy alcohol use is defined as binge drinking more than 4 days a month.
What are the early warning signs and symptoms of alcoholic liver disease that people should be aware of, and when should they seek medical help?
Persistent and heavy drinking takes a huge toll on the liver, and can lead to a variety of problems such as
liver inflammation, liver dysfunction and failure including fatty liver, hepatitis and fibrosis/cirrhosis of
the liver amongst many other health and social problems such as pancreatitis, heart diseases, cancer and
alcohol use disorder.
Early-stage alcoholic liver disease has little or no symptoms as the liver has a large capacity to compensate
till a point where it starts failing. Warning symptoms are vague and non-specific, they can include -
- Nausea and vomiting
- Abdominal pain or discomfort
- Loss of appetite or weight
- Increased thirst
- Fatigue, Weakness, Malaise
- Fever (in alcoholic hepatitis)
- Mood swings, Confusion, Alteration of the sleep cycles
- Fainting episodes
Signs may include lower limb or abdominal swelling/accumulation of fluid, jaundice (yellow discoloration of
eyes/ skin and tea-coloured urine), large spleen, parotid gland enlargement, white nails and engorged veins
around the bellybutton or vomiting of blood.
People who have any of the above signs and symptoms, especially those with a significant history of heavy
alcohol consumption and/or are carriers of Hepatitis B/C should seek early medical attention.
Anyone who thinks that someone has an alcohol problem or dependence should highlight and encourage the
individual to seek help and support early.
Are there any misconceptions about alcoholic liver disease that you think are important to clarify for the public?
Humans do not need any alcohol for life, nutritional guidelines do not recommend that individuals who do not
drink alcohol start drinking for any reason.
Although there are some purported health benefits of alcohol in limited amounts (e.g., red wine) for the heart
and it may decrease the risk of strokes and diabetes. It must be highlighted any potential benefits of alcohol
are relatively small and may not apply to all individuals.
Alcohol adds calories but has little to no nutrients and overall, the risk of consumption of alcohol far
outweighs any benefits it may confer. Emerging evidence suggests that even drinking within the recommended
limits may increase the overall risk of death from various causes, such as cancer and heart disease.
Can alcoholic liver disease be reversed at any stage, and what lifestyle modifications are most crucial for someone diagnosed with this condition?
Yes, the first stage is called alcoholic fatty liver disease, it involves the accumulation of small fat
droplets around liver cells. Fatty liver disease rarely causes any symptoms, but it's an important warning
sign that one is drinking at a harmful level. If one stops drinking alcohol for 2-3 weeks, the liver should
return to normal. Fatty liver is generally considered a reversible condition.
There’s currently no specific medical treatment for alcoholic fatty liver disease. The main treatment is to
stop drinking, period. This reduces the risk of further damage to the liver and gives it the best chance of
recovering. There are many good alcohol treatment programs and support groups available as well.
To minimise the risk of other liver related diseases such as Hepatitis. Hepatitis A and B has good vaccines
available and Hepatitis C has new effective antiviral therapy. Keeping a healthy and active lifestyle
including regular exercises and a balanced diet will also minimise the risk of metabolic syndrome which
includes obesity, high cholesterol, hypertension diabetes, heart diseases and fatty liver.
Could you discuss the latest advancements in treating alcoholic liver disease and any emerging research or therapies that show promise?
The only disease for which there is specific treatment is alcoholic hepatitis. Researchers have studied
corticosteroids and pentoxifylline and have some reported some success. In recent years advances in the
understanding of the molecular mechanisms of alcoholic liver disease have yielded the identification of new
therapeutic targets, some of the emerging and promising therapies includes granulocyte colony-stimulating
factor (GCSF), N-acetylcysteine (NAC), IL-1 receptor antagonist, though more studies and trials are required.
There are study groups actively looking at new treatments for alcoholic hepatitis and are also performing
basic science and translational research into the mechanisms of liver injury in alcoholic hepatitis and
related liver diseases.
A multidisciplinary approach and a sound public health policy are important - for timely identification and
early treatment of liver-related complications, infectious and metabolic disease, malnutrition, and addiction
counselling is key.
