Boys had higher death rates than girls in all age groups from infancy to age 20 between 1999 and 2008, according to a study published in the journal Pediatrics. Researchers noted that boys had approximately 76,700 more deaths in that timeframe compared with girls, with 15- to 19-year-olds having the widest gap. Aside from having a more than twofold increased risk of dying from external causes, boys had slightly higher chances of dying from seven types of childhood cancer.

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