Abstract
Using data from the only large-scale randomized controlled trial promoting prolonged exclusive breastfeeding, we show that the intervention significantly and persistently increased weight-for-age. To explain this result, we provide novel evidence of changes in infant feeding patterns. The estimated increase in calories that treated infants consumed explains a major share of the weight gain in early infancy. Our results suggest that understanding the common alternatives to breast milk is key for designing optimal infant feeding policies.
Working paper by Anne Ardila Brenøe and Jenna Stearns.
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