Calories DO still matter on a ketogenic diet! Yes, “calories in calories out” is outdated and oversimplified and does not take into account the importance of hormones, BUT it is equally as absurd to assert that calories don’t count for keto. It is irresponsible and silly to claim that calories don’t matter – you can still gain body fat on a ketogenic diet, and if you intake 20,000 calories of fat you WILL NOT lose bodyfat.
Let’s stop the nonsense, keto is highly effective but when “leaders” are out there making inane assertions to get attention it makes it very easy for people to dismiss keto (and anyone talking about it) as a ridiculous fad. Calories matter – not all calories are created equal, but eating far above maintenance intake still leads to body fat storage and reduced ability to utilize stored body fat, regardless of your macronutrient ratios.
Keto isn’t a magic bullet – it is HIGHLY effective and can change people’s lives but it is not beyond the laws of physics.
For a detailed breakdown of the “calorie” issue I would highly recommend Bill Lagakos’ book “The Poor, Misunderstood Calorie”: http://www.amazon.com/The-poor-misunderstood-calorie-calories/dp/1453843612