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Morning Sickness Causes & Risks

Causes

There are many theories about the causes of HG, but none have been confirmed. HG is a complex disease that is likely caused by many factors. Some of these include:

  • Vitamin B deficiency
  • Human chorionic gonadotropin (hyperemesis most severe during period of highest HCG levels)
  • Hyperthyroidism (may be a result of high chorionic gonadotropin levels)
  • Endocrine imbalances (high levels of estrogen)
  • A multiple pregnancy (ie, twins or more)
  • Brain nausea-control-center sensitivity to pregnancy changes

The Brain May Be Cause of Nausea

Brainstem and brain
© 2009 Nucleus Medical Art, Inc.

Risk Factors

A risk factor is something that increases your chance of getting a disease or condition.

Some researchers have found that the following factors increase your chance of developing HR. If you have any of these risk factors, tell your doctor:

  • History of HG in previous pregnancies
  • Mother or sister with HG
  • A multiple pregnancy
  • Young maternal age
  • No previous completed pregnancies
  • First-time pregnancy
  • Obesity

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 © 2018 EBSCO Publishing All rights reserved.

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