The study involved six middle schools in Connecticut. Three schools replaced snacks and beverages that did not meet the state’s Healthy Food Certification guidelines, which impose limits on sugar, fat, calories and portion sizes for all foods sold a la carte, in vending machines, at fundraisers and in school stores. The three other schools made no systematic changes.
Students were surveyed about dietary intake and weight concerns before and after the intervention programs began. Researchers assessed the frequency with which students ate a range of beverages and snacks at home and at school for the year prior to the intervention, and then at the end of the year of the intervention.
The study found that students in schools that removed unhealthy foods and beverages did not increase their consumption of those foods at home when compared to students in the schools with no changes.
“These data refute the concern that removing unhealthy beverages and foods from schools will result in overeating these foods at home,” said Marlene Schwartz, Ph.D., deputy director of the Rudd Center for Food Policy and Obesity at Yale. “Some may think that ‘absence makes the heart grow fonder,’ but our data tell us that when it comes to sweetened beverages and unhealthy snack foods, a more apt phrase is ‘out of sight, out of mind.’”
Changing the school food environment also did not exacerbate problems of body and weight dissatisfaction. “When a school system sells only healthy foods and beverages,” Schwartz explained, “the message to students and parents is that good nutrition is important for everyone and schools have an important role to play in setting a high standard for how to feed children well.”
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