Key Concept

Key Evidence: In a study of children in a Brazilian shantytown, researchers found that the greater the number of episodes of persistent diarrhea before age two, the more delayed a child was in terms of school readiness. Overall, each episode of diarrhea delayed a child’s starting school by 0.7 months. Likewise, 6-10 years later, increasing episodes of diarrhea before age two predicted delays in age-appropriate educational attainment.

Lorntz, B., Soares, A.M., Moore, S.R., et al 2006. Early childhood diarrhea predicts impaired school performance. Pediatric Infectious Disease Journal. 25(6).
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