Claiming that 0 grams of carbs allows you to remain healthy is not accurate. It is plainly obvious that unless you want to starve someone, a 0 carb diet, _necessarily_ means a diet that's either high protein or high fat. Both of which have documented problems, in humans, and in other models such as mice.
What are the documented problems in humans with low carb, high fat diets?
I've read about high LDL levels, inflammation, etc. I've experienced the latter, not the former. You can go look it up if that interests you. The original 0 carb statement continues to remain unsubstantiated because no such data exists.
Edit: My mistake, it looks like someone else made the following mistaken argument, first - not you. My apologies.
[ Elsewhere in this thread your invocation of kidney problems was already corrected, and yet you invoke it here, again. This has everything to do with over-consumption of protein, nothing to do with a supposed "carb deficiency". This is not evidence of any alleged "impairment" resulting from insufficient carbohydrates. ]