The links between the age of a baby’s parents when the baby is born and a baby’s intelligence or congenital disorders has been debated for decades. Most doctors agree that older parents giving birth carry a much higher risk of birth defects than younger parents.
What about intelligence? A study published in the New York Times confirms that babies born of older fathers generally do have a lower IQ than those of younger fathers. The differences are not terribly significant, but they are evident in the study.
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