Nationwide, nearly one-third of children are obese or overweight, and in Kentucky the rate is more than 37%, physician Robert Rettie writes. In this commentary, he asserts that preventing childhood obesity is a "family matter." He suggests a "5-2-1-0 Rule," in which children eat five fruits and vegetables daily, limit screen time to no more than two hours a day, exercise for one hour a day and drink no sugary drinks.

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