In 2006, FNS asked the Institute of Medicine to review the WIC food packages. The IOM proposed major changes to improve nutrition and encourage breastfeeding but also expressed the concern that changes related to partial breastfeeding may have unintended consequences. The IOM recommended that FNS conduct an impact study evaluating the birth month breastfeeding changes to the WIC food packages. 

Data from the National Health and Nutrition Examination Survey (NHANES 1999-2004) provide a comprehensive picture of the nutrient intakes, diet quality, and food choices of Food Stamp Program participants. Data are presented for FSP participants, income-eligible nonparticipants, and higher income non-participants, broken out by age and gender.