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Childhood obesity 'set before age of five'
A study of childhood obesity has found some children become obese before the age of five. The study shows how young children are gaining weight more rapidly than is healthy in their early years. Some possible reasons for this are given such as fatty foods and large portions. Experts and parents discuss how best to tackle the problem. This clip was first published on BBC News Online on 17 December 2008. Please note this clip is only available in Flash.
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