According to new research out of the Boston Children's Hospital, the longer a new mom breast-feeds, the greater the benefit to their child's IQ.
Following more than 1,300 mothers and their children, the study revealed that this is the expected outcome after breast-feeding up to one year after a baby is born.
Moms were asked about breast-feeding at six and 12 months, and the kids took intelligence tests at ages 3 and 7.
Compared to babies that aren't nursed as long, those who were breast-fed for the first year of their life gained four points on their IQ!
Study authors say that these findings support both international and national recommendations on breast-feeding.
All of the results appear in the journal "Jama Pediatrics."