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Study: Toddlers of Obese Parents More Susceptible to Developmental Delays

Children born to obese parents are at increased risk of failing motor development and cognitive tests, according to an NIH-led study.

Jan 4, 2017
Ben Andrew Henry

PIXABAY, BETH L.

Overweight parents could be at risk of having children with impaired development, according to a study published January 3 in Pediatrics. Researchers found that children whose parents were substantially overweight were more likely to fail developmental tests for fine motor skills, social competence, or cognitive problem-solving.

The study is also one of the first to examine the effects of not just maternal weight, but paternal weight, on child development. “Our results suggest that dad’s weight also has significant influence on child development,” Edwina Yeung of the Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), a division of the National Institutes for Health, said in a press release.

Yeung and colleagues analyzed the results of a development survey of nearly 5,000 children. After accounting for factors such as age, race, and education, the researchers found that children with obese mothers were almost 70 percent more likely to fail a test for fine motor skills—dexterously moving their fingers, for instance—at age 3. Children with obese fathers were more likely to fail a test for social interaction. When both parents were overweight, children were at risk of also failing problem-solving tests.

The authors point to obesity-associated inflammation and its possible effects on a developing fetus as one possible mechanism that deserves further study. But they stress that “our study wasn’t designed to prove cause and effect,” Yeung told CNN. “At this point, we only have correlations between parents’ BMI and children's scores on a screening questionnaire.”

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