A study of 5,000 Australian children ages 4 to 10 found that, based on body mass index, those from disadvantaged families had a higher risk of being overweight or obese than did their peers who came from wealthier families. While 3.4% of the most advantaged children were obese, 11.5% of the most disadvantaged were obese, according to the study, published in the journal PLoS One.

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