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Miscarriage Causes & Risks


Some miscarriages cannot be explained. Miscarriages often occur for the following reasons:

  • Chromosomal abnormality (most common cause)
  • Advanced maternal age
  • Uterine defects
  • Fibroids
  • Scar tissue from a past surgery
  • Insufficient progesterone (a female hormone needed to support pregnancy)
  • Infection in the genital tract
  • Immunologic factors that may cause blood-clotting problems or rejection of the fetus

Risk Factors

These factors increase your chance of having a miscarriage. Tell your doctor if you have any of these risk factors:

Having a miscarriage during your first pregnancy may place you at a higher risk for complications during your next pregnancy. These complications may include:

Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition. Copyright © 2023 EBSCO Publishing All rights reserved.

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