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Updated 21 May 2013

Childhood obesity starts at home

Study shows children who live in 'walkable' neighbourhoods are less likely to be overweight.

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As parents, physicians and policymakers look for ways to curb childhood obesity, they may need to look no further than a child's own backyard.

A new study shows that preschool children are less likely to be obese if they live in a neighbourhood that is safe and within walking distance of parks and retail services.

"A child's neighbourhood is a potentially modifiable risk factor for obesity that we can target in order to stop the increasing prevalence of obesity in young children," said lead author Julia B. Morinis, MD, MSc, a paediatrician at Hospital for Sick Children in Toronto, Ontario, Canada.

The study is part of a Canadian research collaboration called TARGetKids! (The Applied Research Group for Kids) that aims to determine if factors early in life are related to later health problems. Healthy children ages 0-5 years are enrolled in the ongoing study. Information is collected on their height, weight, waist circumference, nutrition, and physical and sedentary activity. Blood samples also are taken from each child.

Neighbourhoods evaluated

For this study, researchers used TARGetKids data on 3 928 children in Toronto to determine if where they live was related to whether they were overweight or obese. Neighbourhoods were evaluated based on car ownership, population, distance to retail locations, distance to parks and safety.

Results showed that 21% of the children were overweight, and 5% were obese, which is similar to the Canadian norms. Higher rates of overweight/obesity were found among children who live in neighbourhoods that have fewer destinations within walking distance.

"How conducive a child's neighbourhood is to physical activity is related to a child's body mass index (BMI) even after adjusting for factors we know are associated with obesity, including socioeconomic status, immigration, ethnicity, parental BMI, physical activity, age, gender and birth weight," Dr. Morinis said.

Further research is needed to better understand the relationship between neighbourhood factors and obesity so that the risk of obesity can be reduced through neighbourhood changes and urban planning, the investigators concluded.

EurekAlert

 
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