I’ve heard of that. But I do 50 g carbs, 200 g of protein, and 350 g or so of far per day. I’m by no means fat, just have a stubborn belly. We have a blood ketone meter that confirms that I stay in ketosis. Really, I couldn’t care less about the diet, I only do it because my fiancé loves it and has lost 40lbs since January. If it were just me I wouldn’t be doing it, only because of the complexity of the whole thing. But it’s helped her and she’s made it actually really easy, by figuring out how to make every meal with hardly any carbs, and a ton of delicious fat lol