Children train for a soccer game on a field. Parents who let ...
AFP/File
Wed Dec 9, 9:11 PM ET
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Children train for a soccer game on a field. Parents who let their kids romp in the mud and get chummy with germs could be helping to protect them against maladies like heart disease later in life, a US study showed Wednesday.

(AFP/File/Marwan Naamani)

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