High coffee intake reduced all-cause mortality from cancer, circulatory disorders, and digestive and respiratory diseases. Controversy remains, however, regarding the relationship of coffee and benefit for liver disease.
Coffee consumption appears to be associated with some benefit to the liver-
Article Coffee and Liver Disease
It may weel be that coffee drinkers also live a healthier lifestyle as well which could also contribute to the beneficial effect that is see particulalry for NAFLD and NASH
The growing volume of data on coffee indicates its ability to reduce the development of fibrosis, especially in patients with fatty liver. So as these studies accumulate, is it time to recommend two or more cups of coffee daily for persons with non alcohol fatty liver disease...
"These data and those supporting the reduction of all-cause mortality with coffee intake indicate that it may be time to recommend coffee as part of a healthy diet."
Alferink LJ, Fittipaldi J, Kiefte-de Jong JC, et al. Coffee and herbal tea consumption is associated with lower liver stiffness in the general population: the Rotterdam study. J Hepatol. 2017;67:339-348.