A Harvard study finds that babies and toddlers who sleep fewer than 12 hours daily are at greater risk for being overweight in preschool, startling evidence that the link between sleep and obesity may affect even very young children.
TV viewing heightened the effect. The children who slept the least and watched the most television had the greatest chance of becoming obese.
"The two [behaviors] are acting independently. In combination, they are particularly risky," said the study's lead author, Dr. Elsie Taveras of Harvard Medical School.
The findings, published in April's Archives of Pediatrics & Adolescent Medicine, are based on mothers' reports of their babies' sleep habits and TV viewing, and direct measures of the children's height, weight and skinfold thickness.
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