[user104658]

Originally Posted by Zizu

Unless of course - a water fast means you don’t eat food and just have water … in which case that’s fine and dandy

Yes that is what it means - if you go 2 days without water you're flirting with death. 3+ and you're just plain dead .

There's no real need to be doing something as drastic as water fasting unless you're trying to do something drastic like reverse type-2 diabetes.