21 Aug 2013 --- Food prices are predicted to increase anywhere between 1.5% and 2.5%, down from 3% to 4% as predicted in an earlier forecast, according to U.S. Department of Agriculture (USDA). Ricky Volpe, USDA economist says that the original increase was above average, but with the improving economy, lower gas prices and strengthening U.S. dollar, the decreasing shift has occurred.