To supplement all of that without food is certainly possible, but not easy without a ton of research and a plan. Given that most people cannot stick to a normal reduced-calorie diet, it’s a leap to think that full-on fasting will be possible for the general populous.
That said, I do intermittent fasting all the time, and occasionally do a 24-36 hour fast if I feel I need it. I don’t have an eating disorder, but there are times where my calorie surplus gets away from me during family occasions. The longer fasts help me get back on track, especially in tandem with a hard weightlifting workout at the gym to use that surplus to its fullest potential.
I come from a country where skipping a meal is unthinkable and grew up thinking it was unhealthy to not eat when you're supposed to, let alone not eat at all.
During that day I was surprised how "energized" and focused I felt after the initial lunch-time "hump". I reached a point at which I just wasn't hungry any more; I wasn't feeling full of energy but I wasn't tired either, and I was very focused for some reason.
Maybe because it was time to hunt... :P
What you found is exactly how I feel daily. By sticking to keto, that loss of focus is minimized as less energy goes to my gut for digestion.
If, like this guy, you have doctors monitoring you, you'll be okay.
If you just try to go about it without eating, you'll eventually end up with a deficiency in something or other, and have health problems until you eat whatever nutrient it is your missing again.
From a quick google search, it seems that cooking generates more AGEs, which are somehow related to diabetes and cardiovascular disease.
Also, you are a collection of organisms that work together to keep "you" alive. Punishing your gut bacteria/etc just because you can is not healthy.
Gut flora is not hard to restore, and in fact people have to do it quite often since antibiotics take their toll on it.
He had electrolyte maintenance and periodic monitoring. Fasting is a remarkable component of the cure for all sorts of things.
> Punishing your gut bacteria/etc just because you can is not healthy.
Your gut bacteria don't care. They exit as poop and the remainders will be selected for survival, not "punishment". How does one "punish" bacteria? What does that even mean?
Let's be charitable. He probably meant that the intestinal fauna population would be greatly impacted. For what it's worth, about half the time I read, "What does that even mean?" I can immediately think of a possible interpretation, and it makes me think the one who asked should have tried at least a little.
downvoters: I'm not wrong
downvoter isn't either, IMO