The incidence of obesity among US blacks is higher than among Hispanics and non-Hispanic whites, reports the Centers for Disease Control and Development (CDC). The report was prepared by Dr Liping Pan from the CDC's Division of Nutrition, Physical Activity, and Obesity, and colleagues and appears in the July 17 issue of the CDC's Morbidity and Mortality Weekly Report (MMWR).

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Researchers from the Institute of Prevention Research at the Keck School of Medicine of the University of Southern California (USC) found in a recent study that overweight youth were twice as likely to have overweight friends. "Although this link between obesity and social networks was expected, it was surprising how strong the peer effect is and how early in life it starts," says lead author Thomas Valente, Ph.D., professor of preventive medicine at the Keck School of Medicine.

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Scientists at the University of Oklahoma Health Sciences Center have found that playing active video games can be as effective for children as moderate exercise. The findings appear this week in the journal Pediatrics from the American Academy of Pediatrics.

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