I am the same with NSAIDs as I had a perforated duodenal ulcer (no symptoms, no idea I had an ulcer so not treating it). I have to watch the Tylenol. I don't drink and never have. I have had maybe 5 drinks in my life (each just one per occasion and the last 3 nightly drinks of red wine at dinner with our host from hurricane Harvey evacuation - major stress). I have non-alcoholic fatty liver disease (NAFLD). Some could also be caused by being underweight/past anorexia as I've read about fat in those cases possibly being stored more in the liver.