But this sort of depends on what you're judging things by. Actually being nourished by the food is not not a benefit. Also I think a ketogenic diet might give us a softer place to land after a fast. Fasting and a higher carb, or worse, a SAD diet in between--there's a thread in the War Zone where a dietician accuses intermittent fasting of causing binges, and I think with the wrong diet, that could be more likely.