Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Nonalcoholic Steatohepatitis ?
    ### Response:
    NASH is usually a silent disease with few or no symptoms. Patients generally feel well in the early stages and only begin to have symptomssuch as fatigue, weight loss, and weaknessonce the disease is more advanced or cirrhosis develops. The progression of NASH can take years, even decades.
    