Not a doctor fwiw, but elevated ALT and AST levels often comes with being overweight and that could be seen as liver damage. I'm willing to give MS the benefit of the doubt on this claim.
Alcohol is definitely a confounding factor here but this documentary is more of a "social experiment" rather than a proper study.
It's patient sample size (n=1) and doctor (n=1). IIRC, the 2 other doctors MS consulted (cardiologist and a gastroenterologist) didn't mention the same opinion as the internal med doctor and the doctor who did voice the skepticism was also saying it shouldn't be a no brainer that eating Mcdonalds would cause health problems. Other doctors on the web have gone on record to say "this makes sense."
Obviously it doesn't absolve MS of unethical filmmaking practices but that doesn't mean the premise is false given the plethora of other medical literature that supports it.
> Remarkable the hand waving people go through to excuse dishonesty because they want to believe it so badly.
What I find remarkable is how badly people want to ignore just how bad fast food is for you. They'll use anything to dismiss completely the whole debate.