What are the causes of fatty (steatotic) fatty liver disease?

Steatotic liver disease (SLD) can stem from various causes, but certain factors increase the likelihood of its development.  Individuals with cardiometabolic risk factors or those who consume unhealthy amounts of alcohol are at higher risk of developing SLD.

You’re more likely to develop SLD if you:

  • Have alcohol use disorder, characterized by frequent or heavy alcohol consumption.
  • Have metabolic syndrome, which includes insulin resistance, high blood pressure, high cholesterol, and high triglyceride levels.
  • Have Type 2 diabetes.
  • Are overweight (BMI 25 to 29.9 kg/m2).
  • Are obese (BMI 30 kg/m2 and above).
  • Have polycystic ovary syndrome (PCOS).
  • Have obstructive sleep apnea.
  • Have hypothyroidism (low thyroid hormones).
  • Have hypopituitarism (low pituitary gland hormones).
  • Have hypogonadism (low sex hormones).

Take certain prescription medications, such as amiodarone (Cordarone), diltiazem (Cardizem), tamoxifen (Nolvadex), or steroids, as fat buildup in the liver can be a side effect of these medications.

Awareness of these risk factors can help individuals and healthcare providers identify those who may be at increased risk of developing SLD and take appropriate preventive measures. Regular monitoring, lifestyle modifications, and medication adjustments may be necessary to manage these risk factors and reduce the likelihood of SLD development.

Without proper treatment and management, steatotic liver disease can progress to cirrhosis, a serious condition where scar tissue replaces healthy liver tissue.  Cirrhosis can lead to liver failure, liver cancer (hepatocellular carcinoma), and cancers outside the liver, such as colorectal cancer.

Moreover, individuals with metabolic-associated fatty liver disease (MAFLD) are at an increased risk of developing heart disease.  In fact, heart disease, rather than liver disease, is the leading cause of death in people with MAFLD.  This demonstrates the importance of addressing cardiovascular risk factors such as obesity, type 2 diabetes, high blood pressure, and high cholesterol in addition to managing liver health in individuals with MAFLD.  Comprehensive medical care that addresses both liver and cardiovascular health is crucial for improving outcomes and reducing mortality in individuals with MAFLD.

Preventing fatty liver disease primarily involves adopting healthy lifestyle habits and managing underlying risk factors.  Here are some key strategies for preventing fatty liver:

Maintain a healthy weight: Aim to achieve and maintain a healthy weight through a balanced diet and regular physical activity.  Losing excess weight, particularly abdominal fat, can help reduce the accumulation of fat in the liver.

Follow a healthy diet: Focus on consuming a balanced diet rich in fruits, vegetables, whole grains, lean proteins, and healthy fats.  Limit your intake of processed foods, sugary beverages, and foods high in saturated fats and refined carbohydrates, as these can contribute to liver fat accumulation.

Exercise regularly: Engage in regular physical activity, such as brisk walking, jogging, cycling, swimming, or strength training, for at least 30 minutes most days of the week.  Regular exercise helps improve insulin sensitivity, promotes weight loss, and reduces liver fat.

Limit alcohol consumption: If you drink alcohol, do so in moderation.  For adults, moderation typically means up to one drink per day for women and up to two drinks per day for men.  Avoid binge drinking and excessive alcohol consumption, as it can contribute to liver fat accumulation and liver damage.

Manage underlying health conditions: Take steps to manage underlying health conditions that can increase the risk of fatty liver disease, such as obesity, type 2 diabetes, high blood pressure, high cholesterol, and metabolic syndrome.  Follow your doctor’s recommendations for medication management, lifestyle modifications, and regular monitoring.

Avoid unnecessary medications: Minimise the use of medications that may contribute to liver fat accumulation or liver damage.  Always follow your doctor’s instructions when taking prescription or over the counter medications and inform them of any concerns or side effects.

Get vaccinated: Protect yourself against hepatitis A and hepatitis B by getting vaccinated.  These viral infections can cause liver inflammation and contribute to liver damage, especially in individuals with fatty liver disease.

Monitor your liver health: Schedule regular check-ups with your doctor to monitor your liver health and address any concerns promptly.  Blood tests, imaging studies, and liver function tests can help assess liver function and detect early signs of liver disease.

By incorporating these preventive measures into your lifestyle and working closely with your doctor, you can reduce your risk of developing fatty liver disease and promote overall liver health.

Currently, there’s no specific medication approved for reversing the fat buildup in the liver.  However, lifestyle modifications and the management of underlying health conditions play a crucial role in controlling the progression of the disease and promoting liver health.  While liver damage may stop or even reverse itself in some individuals, the disease can continue to progress in others, leading to more severe liver complications such as cirrhosis, liver failure, and liver cancer.  Therefore, it’s essential for individuals with NASH to take proactive steps to control any conditions that may contribute to fatty liver disease and to minimise the risk of disease progression.

Abstaining from alcohol can indeed help reverse liver damage associated with fatty liver disease, particularly in cases where alcohol consumption has contributed to the condition.  By avoiding alcohol for a period, which may vary depending on individual factors and the severity of liver damage, the liver can regenerate and repair itself.

After a period of abstinence, it may be safe for some individuals to reintroduce alcohol into their lifestyle, provided they adhere to recommended guidelines for alcohol consumption.  However, it’s crucial for individuals with fatty liver disease to consult with their doctor before making any decisions about alcohol consumption. Your doctor can provide personalised guidance based on your specific health status, the extent of liver damage, and other individual factors.  They can also monitor your liver health and provide recommendations tailored to your needs to promote optimal liver function and overall well-being.

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