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TriStar Centennial Medical Center

Risk Factors for Gestational Diabetes

It is possible to develop gestational diabetes with or without the risk factors listed below. However, the more risk factors you have, the greater your likelihood of developing gestational diabetes. If you have a number of risk factors, ask your doctor what you can do to reduce your risk.

Risk factors for gestational diabetes include:

Obesity or Overweight

Studies found that women with a body mass index (BMI) of 25.0 to 29.9 (classified as overweight) are at an increased risk of gestational diabetes. If your BMI is over 30, you are at an even greater risk.

Gestational Diabetes in a Previous Pregnancy

If you had gestational diabetes with a previous pregnancy, this puts you at risk for developing the condition again.


Being older (such as, 35 years or older) may increase your risk of gestational diabetes.

Family History of Diabetes

If you have a first-degree relative (parents, siblings) with diabetes, your risk of gestational diabetes is increased.


You may be at an increased risk of developing gestational diabetes if you are:

  • Hispanic American
  • Native American
  • Asian American
  • African American
  • Pacific Islander

Previous Delivery of a Large Baby

If you delivered a baby who was excessively large at birth (called macrosomia ), this increases your chance of gestational diabetes in your next pregnancy.

Other Risk Factors

  • Having a history of glucose intolerance
  • Having a history of polycystic ovary syndrome
  • Being pregnant with more than one fetus (multiple gestation)
  • Gaining weight rapidly during pregnancy
  • Sleep-disordered breathing—abnormal breathing during sleep ranging from snoring to sleep apnea
  • Having risk factors related to childbirth (such, having a previous stillbirth , having a child with a birth defect, having too much amniotic fluid surrounding baby during pregnancy)

Revision Information

  • Gestational diabetes mellitus (GDM). EBSCO DynaMed website. Available at: Updated September 10, 2015. Accessed September 16, 2015.

  • What I need to know about gestational diabetes. National Diabetes Information Clearinghouse (NDIC) website. Available at: Updated August 2013. Accessed September 16, 2015.

The health information in this Health Library is provided by a third party. TriStar Health does not in any way create the content of this information. It is provided solely for informational purposes. It does not constitute medical advice and is not intended to be a substitute for proper medical care provided by a physician. Always consult with your doctor for appropriate examinations, treatment, testing, and care recommendations. Do not rely on information on this site as a tool for self-diagnosis. If you have a medical emergency, call 911.