Every month new studies are published on the beneficial effects of breastfeeding. In this article, we examine the effect of breastfeeding on 2 outcomes where evidence is both disparate and prolific but nevertheless crucial for public health: obesity and cognition (measured via IQ scores). The American Academy of Pediatrics claims a 30% reduction in child obesity if any breastfeeding occurred.1 In Australia, recently published dietary guidelines endorsed the beneficial effect of breastfeeding on obesity but downplayed the effect on IQ.2
Smithers LG, Kramer MS, Lynch JW. Effects of Breastfeeding on Obesity and Intelligence: Causal Insights From Different Study Designs. JAMA Pediatr. 2015;169(8):707–708. doi:10.1001/jamapediatrics.2015.0175
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