Killer at Large (2008)

Why Obesity is Americas Greatest Threat
From NetFlix: "Obesity causes 110,000 American deaths each year and plays a role in one-third of all cancer deaths. Yet, despite ballooning concerns, little is being done on the public policy level, as this probing documentary explains. Exploring the issue from individual, political, scientific and cultural perspectives, the film features appearances by Bill Clinton, Ralph Nader, Arnold Schwarzenegger, former Surgeon General Richard Carmona and others." 2008 102 minutes
Trailer.
Note: I rented this from NetFlix. It is a sobering documentary. Well-worth viewing. A great teaching tool.