Approximately 12% to 26% of all clinically recognized pregnancies end in miscarriage.Which is the most common cause of spontaneous abortion?

Question

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Chromosomal abnormalities are the most common cause of spontaneous abortion, accounting for up to 50% of early fetal losses. This occurs when there is a problem with the genetic material in the fertilized egg, leading to developmental abnormalities that are not compatible with life. Infections, endocrine imbalance, and immunologic factors can also contribute to miscarriage, but are less common causes.

Approximately 12% to 26% of All Clinically Recognized Pregnancies End