Children who are breast-fed for at least six months as babies have less hyperactive behavior by age 3 compared with kids who weren't breast-fed. But breast-feeding doesn't necessarily lead to a cognitive boost.

See the source article by following the link below:
Children who are breast-fed for at least six months as babies have less hyperactive behavior by age 3 compared with kids who weren't breast-fed. But breast-feeding doesn't necessarily lead to a cognitive boost.