This is a deceptively expansive subtopic, covering food energy, effects of high-energy diets, cultural diets, obesity and anorexia. The presentation has much more information than you need, but the links to health issues are there and worth paying attention to.
Class presentation with loads of video and animation links (click on the shadowed images):
You can watch the whole of Super Size Me online at GoogleVideo, and use this question sheet as you watch. You will need to do some further research. BIS Students, don’t waste the bandwidth – watch it on the network.