Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Nonalcoholic steatohepatitis ?
    ### Response:
    Nonalcoholic steatohepatitis, or NASH, is a common, often silent liver disease. It resembles alcoholic liver disease, but occurs in people who drink little or no alcohol. The major feature in NASH is fat in the liver, along with inflammation and damage. Most people with NASH feel well and are not aware that they have a liver problem.
    