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Metabolic dysfunction-associated steatohepatitis (MASH) is a severe form of MASLD (metabolic dysfunction-associated steatotic liver disease) that causes the liver to swell and become damaged. MASH and MASLD used to be called nonalcoholic steatohepatitis (NASH) and nonalcoholic fatty liver disease (NASH).
Medically reviewed on April 2025.
Last updated on June 12th, 2025 at 01:17 pm