Leg, in my experience doctors know very little about nutrition.

I’m on sulfonureas and the only problem is that the best way to activate the meds is by eating some food.

Doctors are the last people I’d consult for matters like this as I wouldn’t trust them as far as I could throw a diesel engine. Their ultra caution aka fear of litigation would make their advice in many cases useless.

To put it bluntly. I don't like fasting. I'm not a masochist. And, I would think the body needs the nutrients it will miss. In the 1970s I read a lot about fasting because I was borderline anorexic and sometimes went for as many as 5 days on cigarettes as my nutrients but I'm a wiser man now. Not for me.

There is no doubt that i have experienced low carb high fat diet with intermittent fasting and calorie restrictive to hold huge value to rapidly loose weight and improve most of my blood markers. Besides the grouchiness already mentioned i do suffer from gout when i shed weight rapidly and i think this gout inflammation did drive up my ferritin levels dramatically which are lot slower to come back down. The loss of over 20kg and the reversing of my a1c makes me a huge supporter of if, low carb, high fat diet.