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Dr. Elizabeth Squirell · Gastroenterologist · Kingston Health Sciences Centre

Fatty liver disease (MASLD)

What fatty liver disease is, why liver scarring matters, how doctors check for it, and the steps that help most.

Key points

  • Fatty liver is common. What matters most is whether your liver has scarring (fibrosis). A blood test score called FIB-4, and sometimes a FibroScan, can check for it.
  • If you are above a healthy weight, losing 5% of your weight lowers liver fat. Losing 7 to 10% helps inflammation, and 10% or more can help scarring.
  • Eat a Mediterranean-style diet. Cut back on sugary drinks and highly processed foods.
  • Aim for 150 minutes of activity a week, such as brisk walking. It helps your liver even if your weight doesn't change.
  • Less alcohol is better. If you have liver scarring, don't drink at all.
  • Look after your heart: blood pressure, cholesterol, blood sugar and not smoking. Heart disease is a bigger risk than liver disease for most people with MASLD.
  • If you have type 2 diabetes, ask for a liver scarring check (FIB-4) every 1 to 2 years.
  • Ask before taking supplements or herbal products for your liver. Statins are safe with fatty liver.

Go to emergency or call 911 if you have

  • You vomit blood or something that looks like coffee grounds
  • Your stool (poop) is black and sticky like tar
  • Your skin or the whites of your eyes turn yellow
  • Your belly swells quickly, or you become very confused or sleepy

Try “pregnancy”, “Mayo”, “calprotectin” or “VARSITY”.