Thinking about it, we all agree, carbs make you fat, fat doesn't make you fat.
All calories aren't equal?
So, primitive man used to lay on body fat to live off over winter, and to help keep warm.
So, primitive diet had to be carb heavy, or they would have died out from not putting on reserves for winter.
So, we evolved on a high carb diet, as we needed the body fat, and high carb have to be the only way to survive.
Modern diet, with continuous plentiful food all year, constant heat, and we can afford to be high fat, and not layer up the body fat.
So LCHF must be a very new, none evolutionary diet, and not something we evolved to be sustainable with?
Or am I missing the missing link in this?