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"How to Win the Weight Battle" [September 10] stated that 17 percent of kids are now obese, which means they're at or above the 95th percentile for weight in relation to height.

The reason that a greater percentage of kids now fall into the "top 5 percent" category is that the standard measurement charts that define obesity were created using data from the 1960s and '70s, when kids weighed less than they do now.