[adrianN]

It depends on how much fat you have. The body is relatively good at living on stored fat for a while. You need to supplement things that aren't stored, like vitamins and electrolytes and you'd better do it under medical supervision. If you fast long enough you also need some amino acids.

[SemanticStrengh]

You have zero idea of the propensity of hidden damages

[beagle3]

Surely there’s documentation you can point us to, since quite a few people have been fasting for a month at a time for ages?

But I’m only looking for documented examples, not extrapolated theory (which is what your first response seems to be), as — already in this thread - we have examples of 60 and 380 day cases with no observable I’ll effects (and I’ll add my own, multiple 15-25 days over the years, starting about 25 years ago — with doctor verified no I’ll effects a month later in most of them)

[adrianN]

I'm not saying that it's healthy. I'm just saying that many people have successfully fasted for surprisingly long intervals without dropping dead.