7 doctors weighed in:

How common are babies born with congenital abnormalities?

7 doctors weighed in
Dr. Allen Seely
General Practice
5 doctors agree

In brief: 2--3%, up to 7%

The usual quoted rate is as low as 2-3%.
However in one prospective study of the outcome of 5, 964 pregnancies the incidence rose to 7%! the cause of 40-60% of congenital anomalies in humans is unknown. These are referred to as sporadic, a term that implies an unknown cause, random occurrence regardless of maternal living conditions.

In brief: 2--3%, up to 7%

The usual quoted rate is as low as 2-3%.
However in one prospective study of the outcome of 5, 964 pregnancies the incidence rose to 7%! the cause of 40-60% of congenital anomalies in humans is unknown. These are referred to as sporadic, a term that implies an unknown cause, random occurrence regardless of maternal living conditions.
Dr. Allen Seely
Dr. Allen Seely
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1 comment
Dr. Richard Roberts
That prospective study was sponsored by the NIH, and followed the children to age 7.
Dr. Nikolaos Zacharias
Obstetrics & Gynecology - Maternal Fetal Medicine

In brief: 2-3% of liveborns.

2-3% of all liveborns will have a minor or major anatomical defect.
This risk increases with advancing parental age (mostly maternal), maternal obesity, pre-pregnancy diabetes mellitus and teratogen exposure prior to conception. Folic acid (4-5 mg daily) if taken during the months leading up to the conception decreases major brain/spine and heart anomalies significantly so it is highly recommended.

In brief: 2-3% of liveborns.

2-3% of all liveborns will have a minor or major anatomical defect.
This risk increases with advancing parental age (mostly maternal), maternal obesity, pre-pregnancy diabetes mellitus and teratogen exposure prior to conception. Folic acid (4-5 mg daily) if taken during the months leading up to the conception decreases major brain/spine and heart anomalies significantly so it is highly recommended.
Dr. Nikolaos Zacharias
Dr. Nikolaos Zacharias
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