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So it seems to have been jumping around a little. "We're going to need more" years of data to see if the apparent trend is really nosing downward, said John Jakicic, director of the University of Pittsburgh's Physical Activity and Weight Management Research Center.
Some wondered whether it makes sense that preschoolers would be the ones leading a downward trend in childhood obesity. For years, most childhood anti-obesity initiatives were older-kid efforts removing soda vending machines from schools and increasing physical education.
Apart from the WIC policy change, there's been less of a push regarding preschoolers. "Relative to older children, less has been done" to fight obesity in toddlers, Whitaker said.
Lingering questions aside, Jakicic said he was still glad to see the numbers. "I think we should be excited it's not getting worse," he said.