The single biggest predictor of obesity is low income

This evening I watched the documentary, Food, Inc., which exposes huge flaws in our food system and explains why unhealthy food is cheaper than healthy food (see this in-depth post).

Fast Food for Fast Living, by Imaging Dissent, on flickr

Somewhere near the middle of the documentary, they flashed the statement, “the largest predictor of obesity is low income” and it made a lightbulb go on in my head.  Was it true?  I immediately logged onto my university library website and did some research to confirm if there was evidence to support this theory. There is and, in fact, there is so much and it is so conclusive that it is disturbing I hadn’t heard of it before (see here for lots of links). Continue reading