A panel of U.S. public health experts says the country's epidemic of childhood obesity threatens to set back the medical advances that have decreased child mortality and extended life spans in the past century. The panel recommends that every sector of the nation work to reverse the rapid rise in youth obesity as ambitiously as anti-smoking efforts. The expert recommendations come in response to a request from Congress, which is seeking ways to reverse the overweight epidemic lest it become an unrelenting health burden to the country. Since the 1970s, the prevalence of obesity has more than doubled among U.S....