Article Photos: Some results of first lady's anti-obesity effort 1/4

FILE - In this Jan. 20, 2011 file photo, first lady Michelle Obama takes part in Wal-Mart's announcement of a comprehensive effort to provide healthier and more affordable food choices to their customers, in Washington. Recent changes put in place by the food industry are in response to the campaign against childhood obesity that Obama began waging three years ago. (AP Photo/Cliff Owen, File)