The decline occurred mainly after 2010, which is when the Healthy and Hungry Children Act was passed, said study author Dr. Dariush Mozaffarian, dean of the Tufts Friedman School of Nutrition Science and Policy and Professor of Medicine at the Tufts School of Medicine.
“It shows you how a single policy passed by Congress can drastically improve the nutrition of millions of children,” Mozaffarian said.
In the results, the researchers also found that the increase in healthy eating in schools affected all ethnicities included in the study equally.
Most calories are from the grocery store
However, Mozaffarian noted, only 9% of the calories children eat come from schools. For adults and children, approximately two-thirds of the food consumed comes from the grocery store.
During the 15-year study, the amount of unhealthy food consumed by children in the grocery store decreased from 53% to 45%. For adults, the drop was 40% to 32%.
Mozaffarian said he believes grocery stores are the “biggest opportunity to improve the quality of the diet,” as most of the calories they consume are bought at these establishments.
One solution would be true cost accounting, he said, which is where food prices are based on their social costs, including that of people’s health.
“Food that really makes people healthier should cost less and be more readily available,” Mozaffarian said. “Foods that cause disease and also harm the environment should be more expensive.”
When parents don’t bring processed foods home, it’s one less opportunity to eat them, said Marion Nestle, professor emeritus of nutrition, food studies and public health at New York University’s Paulette Goddard, who didn’t participate in the study .
Another strategy to decrease the amount of unhealthy foods children consume at the grocery store is to prevent companies from publishing unhealthy food to children, Nestlé said.
He said children have brainwashed themselves into believing they are supposed to eat “baby food” like cereals and fast food marketed for children. But in reality, Nestle said, there is no “baby food.”
Nestle continued, “Children should eat exactly what their parents do. And their parents should eat healthily as much as they can, so there is no need to buy special baby foods.”
He also recommended that grocery stores place healthier foods in top-quality real estate sites, such as end aisles and shelves that are at eye level for adults and children.
“There’s no reason kids can’t appreciate healthy foods,” Nestle said, noting that nutritious foods at school and at home can be delicious.