Neonatal growth linked to IQ

Researchers from University of Adelaide analysed data from more than 13,800 children who were born full term and found babies who gained 40% of their birthweight in the first four weeks had an IQ 1.5 points higher at age six, compared to those who gained 15% of their birthweight.

Those with the greatest increase in head circumference also had the highest IQs.

Lead author Dr Lisa Smithers (PhD) said a greater increase in head circumference — an indicator of brain volume — suggested more rapid brain growth.

“Those

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