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Does Breastfeeding Really Make Kids Smarter?

Does Breastfeeding Really Make Kids Smarter? Research has shown that breastfed children are generally healthier, perform better in school, and score higher on IQ tests than children who are not breastfed. However, until recently, experts were uncertain as to why this occurs.

Now, a new study by sociologists at Brigham Young University (BYU) pinpoints two parenting skills as the real source of this cognitive boost.

First, a breast feeding mother is better at understanding and then responding to a child’s emotional cues. Second, breastfeeding moms traditionally begin reading to the child at an early age, often beginning when the child is nine months of age.

Breastfeeding mothers tend to do both of those things. Thus the cognitive advancements have less to do with the natural nutrients associated with breast milk and more to do with mother-child interaction.

“It’s really the parenting that makes the difference,” said lead study author Ben Gibbs, Ph.D.

“Breastfeeding matters in others ways, but this actually gives us a better mechanism and can shape our confidence about interventions that promote school readiness.”

Gibbs authored the study, “Breastfeeding, Parenting, and Early Cognitive Development” with fellow BYU professor Renata Forste for the The Journal of Pediatrics.

According to their analysis, improvements in sensitivity to emotional cues and time reading to children could yield two-three months’ worth of brain development by age four (as measured by math and reading readiness assessments).

“Because these are four-year-olds, a month or two represents a non-trivial chunk of time,” Gibbs said. “And if a child is on the edge of needing special education, even a small boost across some eligibility line could shape a child’s educational trajectory.”

The BYU scholars utilized a national data set that followed 7,500 mothers and their children from birth to five years of age. The data set is rich with information on the home environment, including how early and how often parents read to their kids.

Additionally, each of the mothers in the study also participated in video-taped activities with their children. As the child tried to complete a challenging task, the mother’s supportiveness and sensitivity to their child’s emotional cues were measured.

The study gained editorial praise from child development expert Sandra Jacobson of Wayne State University School of Medicine. She noted that children in the study who were breastfed for six months or longer performed the best on reading assessments because they also “experienced the most optimal parenting practices.”

“Gibbs and Forste found that reading to an infant every day as early as age nine months and sensitivity to the child’s cues during social interactions, rather than breastfeeding per se, were significant predictors of reading readiness at age four years,” wrote Jacobson.

The BYU researchers note that the most at-risk children are also the least likely to receive the optimal parenting in early childhood. Single moms in the labor force, for example, don’t have the same luxuries when it comes to breastfeeding and quality time with the children. Parents with less education don’t necessarily hear about research-based parenting practices, either.

“This is the luxury of the advantaged,” Forste said.

“It makes it harder to think about how we promote environments for disadvantaged homes. These things can be learned and they really matter. And being sensitive to kids and reading to kids doesn’t have to be done just by the mother.”

Source: Brigham Young University

Woman breast feeding her infant photo by shutterstock.

Does Breastfeeding Really Make Kids Smarter?

Rick Nauert PhD

Rick Nauert, PhDDr. Rick Nauert has over 25 years experience in clinical, administrative and academic healthcare. He is currently an associate professor for Rocky Mountain University of Health Professionals doctoral program in health promotion and wellness. Dr. Nauert began his career as a clinical physical therapist and served as a regional manager for a publicly traded multidisciplinary rehabilitation agency for 12 years. He has masters degrees in health-fitness management and healthcare administration and a doctoral degree from The University of Texas at Austin focused on health care informatics, health administration, health education and health policy. His research efforts included the area of telehealth with a specialty in disease management.

APA Reference
Nauert PhD, R. (2018). Does Breastfeeding Really Make Kids Smarter?. Psych Central. Retrieved on December 5, 2020, from
Scientifically Reviewed
Last updated: 8 Aug 2018 (Originally: 28 Feb 2014)
Last reviewed: By a member of our scientific advisory board on 8 Aug 2018
Published on Psych All rights reserved.