There definitely needs to be an emphasis put on calories. I serve my family food with low calories, and they are better off.
This nation is very overweight and needs to be put on the right track. All these fad diets these past few years have made things worse. There was low-fat, then low carb, and now there is that 500 calorie a day HCG diet. We just need to get back to eating healthy and watching calories. It is the only way to truly lose weight and keep it off.