A mother’s advanced age at childbirth is not the reason for elevated risks of low birth weight or preterm birth, but may instead be related to individual circumstances and behavioral patterns of the mother, according to a new study published in the American Journal of Epidemiology.

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A mother’s advanced age at childbirth is not the reason for elevated risks of low birth weight or preterm birth, but may instead be related to individual circumstances and behavioral patterns of the mother, according to a new study published in the American Journal of Epidemiology.