Brenda Khan
Fatty liver disease is a condition where excess fat is stored in the liver, which can lead to inflammation and serious complications such as cirrhosis and liver failure. While the exact cause of fatty liver is unknown, it is believed to be associated with metabolic conditions, heavy alcohol use, obesity, diabetes, and an unhealthy diet. Certain dietary and lifestyle changes, such as limiting alcohol consumption, adjusting your diet, and managing weight, can help treat and prevent fatty liver disease.
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What You'll Learn
Alcohol consumption
Alcoholic fatty liver disease is the earliest stage of alcohol-related liver disease (ARLD). It is a reversible condition, and abstaining from alcohol for an extended period can allow the liver to recover. However, prolonged alcohol misuse over many years can lead to serious and permanent liver damage, including alcoholic hepatitis and cirrhosis.
The National Institutes of Health defines heavy alcohol use for men as consuming five or more drinks on any given day or 15 or more drinks per week. For women, it is defined as consuming four or more drinks on any day or eight or more drinks per week. In the United States, a standard drink typically contains 14 grams of pure alcohol (ethanol), equivalent to 12 fluid ounces of regular beer, 5 fluid ounces of table wine, or one shot of distilled spirits.
The liver breaks down most of the alcohol consumed, but this process generates harmful substances. These substances can damage liver cells, promote inflammation, and weaken the body's natural defences. Each time the liver filters alcohol, some liver cells die, and excessive alcohol consumption can hinder the liver's ability to regenerate new cells, leading to steatosis.
If fatty liver is caused by alcohol, the recommended course of action is to abstain from alcohol completely. This is crucial to prevent the development of more severe liver conditions. Additionally, dietary changes, such as limiting salt and sugar intake, along with increasing fruit, vegetable, and whole grain consumption, are advised. Participating in an alcohol use disorder treatment program can help individuals achieve and maintain alcohol abstinence.
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Obesity and weight management
Obesity is one of the leading causes of non-alcoholic fatty liver disease (NAFLD). NAFLD is a growing threat to human health, particularly in developed countries, where it is the most common cause of chronic liver disease. The condition involves a build-up of fat in the liver, which can lead to inflammation, scarring, and eventually, cirrhosis. Obesity increases the risk of developing NAFLD, and with the rise in adult obesity rates, the prevalence of NAFLD is also increasing.
Weight management is a critical aspect of preventing and treating NAFLD. Losing weight is the cornerstone of treating obesity-related liver diseases. Lifestyle changes, including dietary modifications and regular exercise, are recommended as the first-line approach to managing obesity and NAFLD. A balanced diet that promotes steady weight loss is advised. Healthcare providers often suggest limiting sugar intake and adopting a Mediterranean diet rich in vegetables, fruits, nuts, seeds, whole grains, and healthy fats. Lean protein sources, such as fish and chicken, are also recommended, while red meat and sugary drinks should be limited.
In addition to dietary changes, regular exercise plays a crucial role in weight management and improving liver health. Studies have shown that exercise alone can reduce liver fat in people with NAFLD, even without significant weight loss. This highlights the importance of incorporating physical activity into the management of NAFLD, as it can halt or reverse the progression of the disease.
When lifestyle changes are not successful in achieving weight loss and improving NAFLD, medical interventions may be considered. Anti-obesity medications, such as phentermine/topiramate, orlistat, liraglutide, and bupropion/naltrexone, have been shown to result in significant weight loss and improve NAFLD. Endoscopic and surgical procedures, including bariatric surgery and endoscopic bariatric treatments (EBTs), are also options for more invasive weight loss interventions. These procedures can be safe and effective alternatives for individuals who have not responded to lifestyle and pharmacological measures.
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Dietary changes
Mediterranean Diet
The Mediterranean diet is often recommended for people with fatty liver disease. This diet emphasizes eating primarily plant-based foods, such as fruits, vegetables, whole grains, nuts, legumes, and healthy fats. It also includes lean meats while reducing red meat and limiting sweets and added sugars. The Mediterranean diet has been associated with a decreased risk of heart disease and can help reduce blood pressure and bad LDL cholesterol.
Healthy Fats and Plant-Based Foods
Focusing on healthy fats and plant-based foods can be beneficial for liver health. Olive oil is specifically recommended, with some sources suggesting consuming around four tablespoons per day.
Coffee Consumption
Regular coffee consumption has been linked to a lowered risk of developing non-alcoholic fatty liver disease (NAFLD) and slowing its advancement. Compounds in coffee may help protect the liver, and some recommendations suggest drinking up to three cups of coffee per day.
Reduce Added Sugars and Processed Foods
A fatty liver diet typically involves reducing intake of foods and beverages high in added sugars, refined carbohydrates, and saturated fat. This includes limiting sugary drinks and sweets, as well as processed convenience foods and junk food.
Weight Management
Gradual weight loss through a combination of calorie reduction and healthy eating is important for overweight or obese individuals with fatty liver disease. Maintaining a healthy weight can help improve liver health and reduce the risk of associated conditions.
It is always recommended to consult with a healthcare professional or dietitian to determine the best dietary approach for your individual needs and circumstances. They can provide personalized advice and guidance based on your specific situation.
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Exercise
If you are obese or overweight, gradual weight loss is recommended. Losing 5 to 10% of your body weight can help control and even remove some fat from the liver. This can be achieved through a combination of calorie reduction, exercise, and healthy eating. It is important to note that exercise provides extra benefits for managing fatty liver disease symptoms, and regular exercise is recommended for everyone.
For those with NAFLD, the American Gastroenterological Association (AGA) recommends at least 150 to 300 minutes of moderate aerobic exercise or 75 to 150 minutes of vigorous exercise per week. It is always advisable to consult with your doctor before starting an exercise regimen, especially if you haven't been exercising regularly.
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Metabolic conditions
Metabolic dysfunction-associated steatotic liver disease (MASLD) is a group of liver diseases that develop when an individual's body stores excessive fat in their liver. MASLD was previously referred to as nonalcoholic fatty liver disease (NAFLD) or non-alcohol-related fatty liver disease (NASLD). The name was changed to reflect that the fat buildup in the liver is associated with cardiometabolic risk factors. These factors include conditions and characteristics that pose risks to an individual's heart health.
- Dyslipidemia: High levels of lipids (fatty or waxy substances) in the blood, such as cholesterol.
- Obesity: Individuals with a body mass index (BMI) of 30 or higher, particularly those who carry extra weight in their abdomen, are at an increased risk of MASLD.
- Insulin resistance: Insulin is a hormone that manages blood glucose levels. Insulin resistance occurs when cells in the muscles, fat, and liver don't respond appropriately to insulin.
- Type 2 diabetes: MASLD is a risk factor for developing type 2 diabetes, and having type 2 diabetes can also contribute to the development of MASLD.
- High blood pressure: This is another cardiometabolic risk factor associated with MASLD.
The damage caused by MASLD can often be halted or reversed through lifestyle changes and medications. Healthcare providers recommend managing weight, eating a healthy diet, exercising regularly, and limiting alcohol consumption to prevent and treat MASLD.
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Frequently asked questions
Fatty liver, or steatotic liver disease, is when there is excess fat in your liver. A healthy liver contains a small amount of fat, but when it reaches over 5% of the liver's weight, it becomes a problem.
Fatty liver is caused by heavy alcohol use, metabolic issues, obesity, diabetes, high triglycerides, rapid weight loss, malnutrition, and certain medications. Fatty liver can also develop during pregnancy, although this is uncommon.
Diet can be a contributing factor to fatty liver. Excess calorie consumption and an unhealthy diet high in sugar, red meat, and fatty foods can cause fat to build up in the liver. However, dietary fat alone does not produce a fatty liver, and a well-rounded, nutritious diet can help improve liver health.
