But prices at local supermarkets are lower, notes a new University of Illinois study, so the question becomes how much should taxpayers spend in hopes that families will eat more vegetables, if they don't buy them at supermarkets. Should we mandate their behavior by giving them vouchers for farmer's markets rather than grocery stores?
In the study, 377 participants were recruited from the WIC Clinic in Champaign, Illinois, and surveyed on their dietary intake and habits. Meanwhile, prices were collected every two weeks at area grocery stores and farmers markets. The median intake for both vegetables and fruit among study participants was two servings a day, but almost 70 percent did not meet the national recommendation for amount of vegetables eaten daily, and about 25 percent did not eat the recommended amount of fruit.
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USDA uses farmers market vouchers nationwide to allow WIC mothers to purchase more vegetables than they could otherwise afford. About half the participating mothers received vouchers for farmers markets; the other half did not. 57 percent of participants who used the vouchers had never shopped at a farmers market before.
“The biggest effect the vouchers had was related to the quality of participants’ diets. Those who used the farmers market vouchers ate a greater variety of vegetables and were more likely to choose fruits or vegetables as snacks (57.3%) over those who did shop at the farmers markets (46.7%),” said Karen Chapman-Novakofski, a University of Illinois professor of nutrition.
“The average number of vouchers received was two at a total value of around $6.00.This may not be enough to have a significant impact on vegetable intake. For instance, according to the Economic Research Service, the average cost per pound of green beans is $3.23, and a pound provides about three cups of vegetables," said Brandon Meline, director of maternal and child health at the Champaign-Urbana (Ill.) Public Health District.
“So the most direct effect the vouchers could have had on vegetable intake was about six cups of vegetables for the participant and her children. Indirectly, however, the vouchers may have contributed to the mother’s choice to serve vegetables, what types of vegetables will be served, and maintaining a positive attitude about eating them. The farmers market vouchers may serve as a gateway to exposure to more fruits and vegetables, and clients would use other sources of food dollars to maintain fruit and vegetable intake,” Chapman-Novakofski noted.
So is the WIC farmers market voucher program a success?
The jury’s still out, said Chapman-Novakofski. “This study has shaped our thinking about the way we promote these markets to economically disadvantaged women. Farmers markets are a good place to find fresh, appealing produce, and they provide a venue for cooking demonstrations and nutrition education, but economically disadvantaged moms need to be able to purchase produce at the best prices. “It’s important to note that not all farmers markets are more expensive than supermarkets. In some areas and in different states, they are less expensive.”
Chapman-Novakofski said that researchers see differences in farmers market use among states that have longer growing seasons. “We’d also like to know how much of the food purchased at farmers markets is eaten. And we’re interested in how consumers view the quality of farmers market produce and the kinds of fruits and vegetables they most often purchase.”
Citation: Ashley L. Wheeler, MS, RD; Karen Chapman-Novakofski, RD; PhD; Farmers' Markets: Costs Compared with Supermarkets, Use Among WIC Clients, and Relationship to Fruit and Vegetable Intake and Related Psychosocial Variables, Journal of Nutrition Education and Behavior, Volume 46, Number 3S, 2014, http://dx.doi.org/10.1016/j.jneb.2013.11.016
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