And in fact this study totally fails to refute that idea. All it does is it says that, among a half million people, the higher-BMI groups had more cases of high

And in fact this study totally fails to refute that idea. All it does is it says that, among a half million people, the higher-BMI groups had more cases of high cholesterol, high blood pressure, and diabetes, even when controlling for levels of physical activity. It says nothing about whether adding physical activity to get to a lower-BMI group could work as a treatment for any of those, nor whether there are any consequences of that level of physical activity.