....
Since switching to a low carb diet (I'm not good enough at it to call it a ketogenic diet truly) I am better than I was in a lot of ways, like in particular I don't carve carb's like I used to and don't get hungry between meals like I used to. Buuutttt..... I still get pretty wobbly if I am late having a meal or miss a meal. I would need to take a few days off work to try a fasting for 2 or 3 days.
ketogenic diet seems to just be a fad that results in rapid weight loss but not healthy long term. See for example: https://nutritionfac...-series-part-1/
It'd be a fad for me if I only did it for a couple of weeks and boasted about sudden weight loss. However ...
I've been low carbing for getting on for a year and whilst I did lose some weight initially I plateaued at 90% of my previous weight. The % body fat I have has remained the same. BUT and here comes the really important bit for me - my blood sugar is much lower and stable - no longer T2 diabetic AND my cholesterol has lowered significantly.
I think the problem we have with dietary recommendations is they tend to be one size fits all when humans are nothing of the sort. Lo carb or the more 'extreme' ketogenic diets may well not suite everyone but it sure suites me.