So, it's like this. Say you make a life changing decision to start p90x. There's a meal program with that. So you exercise and exercise - and you've changed your eating habit too. You still blame p90x for the miracle change. Same when people decide to go organic, or start some other "alternative" wholistic magical diet including kombucha, kefir, raw diet, atkins, whatever. Usually there's more than just the one change and it's usually for the positive. All diets work - but are they sustainable.