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How common are multiple births?

Multiple births (twins, triplets or more) have become much more common in the United States over the past 20 years, according to the National Center for Health Statistics. The dramatic rise, especially in triplets or higher births, is associated with two related trends: advances in and greater access to assisted reproductive therapies like in vitro fertilization and more women having children at an older age (women in their thirties are more likely to have multiple births than younger women, even without the use of fertility therapies). The rate of triplet and higher births seems to be leveling off. Reasons include refinements in assisted reproductive techniques that lower the risk of multiple births.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.