General Mills funded a broad study on the impact of whole grains on immunity. As part of the study, Radford wanted to know if children could meet the 2010 dietary guidelines for whole grains. For the study, 83 students in a Florida middle school were randomly assigned to receive either whole- or refined-grain foods over a six-week period in 2010. Of those, 42 students were in the refined grain group, while 41 were in the whole-grain group. Participants and their families were given refined-grain or whole-grain pasta, rice, bread and other foods to eat at home. And they were given whole- and refined-grain snack foods to eat at school.