Prices on different types of foods are thought to play an important role in what children eat.
"This study confirms initial evidence for an association between weight gain among elementary school children and relative food prices in their environment. In particular, lower real prices for fruit and vegetables relative to other goods and services (including other foods, housing) may slow excess weight gain."
An excerpt from Public Health
Healthy Eating Research
Healthy Eating Research is a national program of the Robert Wood Johnson Foundation (RWJF). The program supports research on environmental and policy strategies with strong potential to promote healthy eating among children to prevent childhood obesity, especially among lower-income and racial and ethnic populations at highest risk for obesity.