Fatty liver is hereditary. But you can control your diet and exercise to improve your chances of not getting this. Fatty liver can progress to cirrhosis of the liver and you may have other problems.
My husband was diagnosed with hep c at the time we and the do,goes didn't think it was that bad. He has no liver damage. Fast forward to August 2017 he broke out in a rash which Dr thought was just an allergic reaction. Gabe steroids and it went away...