David Ludwig, a childhood obesity specialist at Children's Hospital Boston and Harvard Medical School, is cheered by Michelle Obama's obesity initiative: "The obesity epidemic isn't [due to] a lack of knowledge. It's a lack of political will in Washington." That includes reluctance to push for
high-quality food in schools, have farm subsidies that are in line with public health and not special interests, and make healthy foods available to low-income neighborhoods, Ludwig says. "There's certainly room for discussion among the experts" about how best to tackle all this. But Obama's campaign "offers a promise of ending this paralysis" and Ludwig says he's hopeful it will. Others are not as sanguine.