Is the obesity epidemic a public health problem?

"The world-wide and ongoing rise in obesity has generated enormous popular interest and policy concern in developing countries, where it is rapidly becoming the major public health problem facing such nations. As a consequence, there has been a rapidly growing field of economic analysis of the causes and consequences of this phenomenon. This paper discusses some of the central themes of this decade long research program, aiming at synthesizing the different strands of the literature, and to point to future research that seems particularly productive"--National Bureau of Economic Research web site.