Inequality might be the key

The linkage between childhood obesity and socioeconomic status is certainly very interesting. It has been studied by several scholars before, as summarized by Wang and Lobstein (2006). The results, however, raise more questions than they have answered. The most important question is this: why this relationship keeps changing from research to research, are there anything missing in these research?

I have a bold hypothesis on this: social inequality is the most important moderator of the relationship between childhood obesity and SES.

It will be very interesting to see whether the empirical evidence supports this argument.