How do people successfully lose weight? Which diets work best? And what's the connection between diet and health? "Diet Wars" producer Jon Palfreman tackles these and other questions.

For Americans who want to lose weight, there's certainly no shortage of diets to choose from, with each claiming to offer the best weight-loss solution. Here is a chart comparing the basic elements of each diet profiled in "Diet Wars": its premise, its logic, and what critics are saying. Plus, a sample dinner from each plan.

A look at how Americans' eating habits -- and the dietary advice we've received -- have changed over the years.