Let me try and be more precise. Non-alcoholic fatty liver disease is strongly correlated with obesity. Obesity is a public health problem that is getting worse

Let me try and be more precise. Non-alcoholic fatty liver disease is strongly correlated with obesity. Obesity is a public health problem that is getting worse, not better. It is tied to diet and lifestyle that cannot quickly be corrected, even among highly motivated individuals. Compound that with the fact that fatty liver disease (or any liver disease) will probably not be detected before symptoms emerge that indicate actual damage to the liver has occurred. It's impossible to quickly become un-obese, even for the motivated patient. This puts these patients at risk for advancing liver disease. Contrast that with HepC. It can be detected before overt symptoms of liver disease sets in. It can be cured in as little as eight weeks. The cure itself doesn't require any lifestyle change (though IV drug users need to prevent re-infection, and insurance companies in the US won't give you a second chance). And the cure has been shown to allow the liver to heal. Your co-workers aren't the at-risk population.