The Brain

Premature Babies Who Are Breastfed May Have Larger Brains And Higher IQ

A new study has revealed that breastfeeding as opposed to using infant formula could boost the neurodevelopment of “very preterm” babies. Publishing their findings in the Journal of Pediatrics, an international team of scientists discovered that infants born before 30 weeks gestation tended to have a higher IQ at the age of seven if fed predominantly with their mothers’ milk during the first month of their life, compared to those that received formula. This was also reflected in the volume of grey matter in certain key regions of the brain.

Because of its high nutritional value, breast milk is a vital component of the diet of newborn babies, helping them grow and develop. But premature babies often have different dietary requirement to those that are born after a full nine months in the womb, and therefore often struggle to gain weight when fed only on breast milk, which is why they are sometimes given preterm formula instead.

However, after analyzing data relating to 180 babies born prior to 30 weeks, the study authors found that by the time they reached term, those whose diets consisted of more than 50 percent breast milk during their first 28 days of life had higher volumes of grey matter in their deep nuclei. These are regions of the brain containing high concentrations of neurons, which play a major role in controlling brain activity and regulating cognition.

For instance, the thalamus and the basal ganglia, both of which are highly involved in coordinating the flow of neural activity that gives rise to consciousness, were among the brain regions found to be enlarged in those who had received higher proportions of breast milk.


Preterm babies often struggle to gain weight when fed only on breast milk. chuanpis/Shutterstock

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