All right fatties, you know who you are. (If you have any doubt, a person has traditionally been considered to be obese if they are more than 20 percent over their ideal weight.) As you suck down another soda, be mindful that you also are sucking on my wallet. More than guns, more than cigarettes, OBESITY is a leading threat to the health and well-being of Americans from coast to coast. And it also is a HUGE burden on both our tax and healthcare systems. Obesity Trumps Smoking As American Health Burden | WBUR & NPR Quote: You know what used to be -- smoking used to be the biggest cause of preventable death and disease, and today, as fewer people smoke and obesity rates creep up, obesity has now surpassed smoking as the biggest burden on America's health, according to a study out this week in the American Journal of Preventive Medicine.