Diets high in fast food can be highly toxic to the liver and other internal organs, but that damage can be reversed, says one of the country’s leading experts on non-alcoholic fatty liver disease, who offers four steps to undo the effects of a 'super-size me' diet.Late in the story we learn:
etri is quick to emphasize that fast food per se doesn’t causes liver damage. Rather, he says, the harm comes from eating too many calories and ... “The big issue here is caloric content,” says Tetri.Yes, calorie content. If you go on a super-size movie diet where you double your calories eaten and avoid all exercise, then you will gain weight and have other health problems. The mice is the study displayed an increase in liver enzymes.
The article suggests avoiding fast food, but the research doesn't really show that fast food is any worse than any other food with the same calories.
Here is a funny cartoon about bacon being bad for your health. In reality, bacon is good for you.