Breadcrumb Home UI study finds concession stands shouldn't be afraid of healthy foods Monday, March 17, 2014 The Daily Iowan http://www.huffingtonpost.com/2014/03/14/school-concessions-healthy-foods_n_494… A study by the University of Iowa showed that a concession stand at high school athletic events in Muscatine saw no drop in sales when it added healthy foods.