I don't think anyone disputed that fact. However, the diet one chooses, and the ability to embrace it as a long term lifestyle change is important. My years of experience (and others as well) suggests that diet alone won't work. I found it near impossible to maintain a healthy diet without an adequate dose of exercise. Without *adequate* exercise I found that I was able to lose a limited amount of weight before I plateaued and lost interest in the whole thing. I've never been able to do what I've done in the past three years...lose the weight, gain a phenomenol amount of strength, and do physical activities that I was never able to do, even in my teens.