Note, however, that almost anything that hampers your metabolism (such as fasting or a ketogenic diet) or overburdens your body, will strongly tend to be anti-inflammatory, for the simplest of reasons: your body wants to fight an invader or toxin (that maybe it shouldn't) but you've clamped down on its ability to do as much as it likes; you've put it on a budget. This will also limit your ability to repair DNA and much else.

I'm not saying that's the mechanism here, but it could be, and is for very many anti-inflammatory effects.

Granted, fasting is part of our evolutionary history, some of it does seem to be healthy, overall.