The federal government has a growing interest in the eating habits of Americans for the same reason it has an interest in tobacco consumption, said Kathleen Sebelius, the secretary of the Department of Health and Human Services. The reason is money, because three-quarters of medical-spending is driven by chronic diseases, such as obesity and tobacco-related diseases, she said. Sebelius’ comments came at the tail-end of Tuesday’s White House press conference where officials showcased nine new photos that must be carried on cigarette packs. Officials used a survey of 18,000 people to find the images that would have the most distressing...