Nonalcoholic fatty liver disease (NAFLD) involves the build-up of fat in the liver of people who drink little or no alcohol. It is a common condition. NAFLD may not cause any problems if it is mild. In some cases, it can cause inflammation and scarring in the liver. If this is severe, it can cause liver failure.
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When the liver is unable to break down fats, they build up in liver tissue. Many conditions and diseases make it difficult for the liver to break down fats.
NAFLD is more common in men and with increasing age. Other factors that increase the chance of NAFLD include:
This disease often causes no symptoms. If fatty build-up is causing the liver not to function well, you may have symptoms. Symptoms may include:
Your doctor will ask about your symptoms and medical history. A physical exam will be done.
Tests may include:
Treatment focuses on the factors that are causing fatty liver disease. Talk with your doctor about the best treatment plan for you. Treatment may focus on avoiding certain medications, chemicals, or lifestyle factors that can damage your liver.
Weight loss of 10% of a person's body weight has been shown to cure the disease. If you are overweight, your doctor may recommend weight loss through:
Your doctor may recommend medications to control the condition causing NAFLD.
To reduce your chance of NAFLD:
American Gastroenterological Association
American Liver Foundation
Canadian Association of Gastroenterology
Canadian Liver Foundation
Bayard M, Holt J, Boroughs E. Nonalcoholic fatty liver disease. Am Fam Physician. 2006;73(11):1961-1968.
Nonalcoholic fatty liver disease. American Liver Foundation website. Available at: http://www.liverfoundation.org/abouttheliver/info/nafld. Updated October 4, 2011. Accessed May 14, 2013.
Nonalcoholic fatty liver disease (NAFLD). EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed. Updated November 9, 2012. Accessed May 14, 2013.
Nonalcoholic steatohepatitis. National Institute of Diabetes and Digestive and Kidney Diseases website. Available at: http://www.niddk.nih.gov/health-information/health-topics/liver-disease/nonalcoholic-steatohepatitis/Pages/facts.aspx. Updated April 30, 2012. Accessed May 14, 2013.
1/31/2008 DynaMed's Systematic Literature Surveillance http://www.ebscohost.com/dynamed: Zaman A. Promote weight loss in patients with NAFLD. NEJM Journal Watch. Published September 24, 2013. Accessed October 1, 2013.
10/8/2014 1/31/2008 DynaMed's Systematic Literature Surveillance http://www.ebscohost.com/dynamed: Musso G, Gambino R, Tabibian JH, et al. Association of non-alcoholic fatty liver disease with chronic kidney disease: a systematic review and meta-analysis. PLoS Med. 2014;11(7):e1001680.
Last reviewed March 2016 by Daus Mahnke, MD
Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.
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