Routine Tests Can Identify Risk of Gestational Diabetes Years Before Pregnancy

| Feb 19, 2012

Up to seven years before she becomes pregnant, a woman's risk of developing diabetes during pregnancy can be identified based on routinely assessed measures of blood sugar and body weight, according to a Kaiser Permanente study published in the online issue of the American Journal of Obstetrics and Gynecology.

Researchers at the Kaiser Permanente Division of Research in Oakland, California, studied 580 ethnically diverse women who took part in a multiphasic health checkup at Kaiser Permanente Northern California between 1984 and 1996. The researchers looked at women who had a subsequent pregnancy and compared those who developed gestational diabetes mellitus (GDM) during pregnancy to women who did not have GDM.

The study found that the risk of GDM increased directly with the number of adverse risk factors present before pregnancy that are commonly associated with diabetes and heart disease: high blood sugar, hypertension, and being overweight. In addition, the authors found that adverse levels of blood sugar and body weight were associated with a 4.6-fold increased risk of GDM, compared to women with normal levels.

The study is among the first to look at routinely measured cardio-metabolic risk factors before pregnancy in women who later became pregnant and developed GDM. It provides evidence to support pre-conception care that leads to healthy pregnancies, as called for in a 2006 report by the Centers for Disease Control and Prevention. That report suggested that risk factors for adverse outcomes among women and infants can be identified prior to conception and are characterized by the need to start, and sometimes finish, interventions before conception occurs.   

Previous research has shown that women who develop GDM during pregnancy are more likely to develop type 2 diabetes after pregnancy. GDM is defined as glucose intolerance that typically occurs during the second or third trimester and causes complications in as many as seven percent of pregnancies in the United States. It can lead to early delivery and Cesarean sections, and it increases a baby's risk of developing diabetes, obesity, and metabolic disease later in life.

"Our study indicates that a woman's cardio-metabolic risk profile for factors routinely assessed at medical visits, such as blood sugar, high blood pressure, cholesterol, and body weight, can help clinicians identify high-risk women to target for primary prevention or early management of GDM," said lead author Monique Hedderson, PhD, a scientist at the Kaiser Permanente Division of Research.

Although the established risk factors for GDM are older maternal age, obesity, non-white race/ethnicity, having given birth previously to a very large baby, and a family history of diabetes, these risk factors are absent in up to half of women who develop GDM. This study is significant because it gives a better understanding of pre-pregnancy predictors of GDM that may help identify women at risk and get them into intervention programs before pregnancy.

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Categories: Blood Sugar, Centers for Disease Control and Prevention, Cholesterol, Diabetes, Diabetes, Gestational Diabetes, High Blood Pressure, Obesity, Over weight, Pre-pregnancy Predictors , Type 2 Diabetes, Type 2 Issues

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Posted by Melitta on 21 July 2011

A huge oversight with this article is ignoring autoimmune gestational diabetes. 1 in 10 Caucasian women with GDM has autoimmune gestational diabetes, and goes on to full-blown Type 1 diabetes following pregnancy. GDM is a risk factor not just for Type 2 diabetes, but also for Type 1 diabetes.

Posted by Anonymous on 23 February 2012

This previous comment makes such sense. I was diagnosed with type 1 diabetes when I was 6 months pregnant with my 2nd child. I was my normal (and healthy??) weight of 56 kg for 1.71 m and no risk factors other than a 4.85 km baby in my first pregnancy. No cholesterol or hypertension problems and I was never told I was at risk. But I clearly was. I am now a controlled type 1 after many years of struggling with uncontrollable hypos. I wish I had know when I was pregnant with my first child that there was a risk of developing diabetes - which I only developed more than 6 years later

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