Obesity is a well known problem in the USA but it is a problem that is spreading accross the world. Indeed it is fast becoming the bigest single contributing factor to servere health conditions reported by the UK's NHS. Obesity is also widly reported across Europe but now also increasingly in other continents and cultures. Japan, and Mexico's obesity rates are doubling every decade and with each culture comes different reasons and problems encountered in the populations health.
Somehting needs to be done but there is no clear solution. For instance obesity obesity problems can be solved with treatments such as Xenical. However, this does not solve the underlying issues with most cases of obesity. The real issues are one of changing diets, changing societies, and the changing life styles of modern life. Indeed many oof the new cities being built in China are follow the American planning style which discourages people to walk, instead people end up driving everywhere. Add to that the spread of high in fat and sugared processed foods there could be an explosion in obesity and related conditions in China.
There can only be two ways in which this will go. Either processed foods will be banned the world over or conversly the worlds food output may not meet the demands of a growing world population.
Solutions will however have to be found as the aditional cost will be too high for health systems to bare.