Policy and healthy weight.

"Policy" is defined as a definite course of action adopted for reasons of expedience, prudence, wisdom, or common sense. What can be said about policy and healthy weights? We must draw conclusions from the evidence offered for the comorbidities associated with overweight. Then we must ask, what is a healthy weight? How much gain or loss will suffice to arrive at a healthy weight? What other issues such as economics and mental health costs affect policy? To facilitate the process, I will review the policy issues for which there is already a consensus and then outline the evidence available from which this group might gain perspective for formulating practical public health recommendations.