Overall IQ was higher by 4 points in children who were breastfed than in those receiving formula. Adjustments included periconception folate. In mothers receiving Valproate (Valproic acid, Epilim) there was a mean difference of 12 IQ points between the breastfed and formula fed groups.
106 for breastfed v. 94 for formula fed P = .04
A complex milk has evolved to prepare a complex human brain