dominic wrote: The conclusions - eat less carbs especially the sugars, eat more nuts, green veg, oily fish etc, are fine, but what had this to do with the central hook of the programme - that calories don't matter?
I'm a little late to this thread, but the big impression I get out of this is that nuts get a short-shrift in the "a calorie is a calorie, calories-in/calories-out" crowd because of the amount of calories and fat there are in things like raw almonds, walnuts, peanuts, etc.
That is, for the "a calorie is a calorie" crowd, you need to look at me with a straight face and tell me that if your TDEE is 2400 calories and you've eaten 1400 calories today, then you are better off eating 500 calories worth of cake and cookies (biscuits for you UK peeps

) and candy than you would be eating 1000 calories worth of raw almonds because the former gives you a 500 calorie deficit and the latter gets you right to your TDEE and the calorie count is what matters when it comes to losing weight.
I think that most people realize that the above example is a non-trivial challenge to the "calorie is a calorie" crowd, and I think it's the same challenge that 5000 cal/day 21-day challenge guy is doing (who, not coincidentally, is eating a majority of his calories in three snacks full of raw nuts).