“Association between breastfeeding and intelligence”, Victora CG, Horta BL et al, reported a dose-related association with breastfeeding duration for IQ, educational attainment and income in adulthood. In the population studied, breastfeeding was evenly distributed by social class. This suggests that it is a national priority to provide lactation consultants to help mothers breastfeed their precious babies and so reach their evolutionary potential. A Bell curve shows how a 4 point IQ advantage can push the IQ beyond 160 and possibly generate an Albert Einstein (breastfed 3 years). On the downside a 4 point IQ deficit may result in the need for a full time carer.

The Lancet Global Health vol 3, no 4, e199-e205, April 2015