Gestational Diabetes and Long-Term Cardiometabolic Health
Sep 5, 2023
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The podcast discusses the long-term cardiometabolic health risks for individuals with pregnancies complicated by gestational diabetes. It covers the importance of postpartum screening for gestational diabetes, screening recommendations and implications for pregnancy outcome, diabetes screening and cardiometabolic health after gestational diabetes, and recognizes gestational diabetes mellitus as a red flag for future cardiometabolic risks.
Individuals with a history of gestational diabetes have an increased risk of developing type 2 diabetes and other cardiometabolic conditions in the long term.
The inconsistent postpartum screening rates for gestational diabetes hinder the identification of individuals who develop prediabetes or type 2 diabetes after pregnancy.
Deep dives
Gestational Diabetes Mellitus: Implications for Lifelong Cardiometabolic Health
Gestational diabetes mellitus (GDM) is a common complication during pregnancy, affecting almost one in 10 pregnant individuals in the United States. However, it is important to recognize that GDM is not solely about pregnancy outcomes, but rather a red flag for lifelong cardiometabolic health. Individuals with a history of GDM have an increased risk of developing type 2 diabetes and prediabetes, as well as other cardiometabolic conditions like hyperlipidemia, chronic hypertension, and cardiovascular disease in the long term. The risk of developing prediabetes or type 2 diabetes within 12 months after delivery can be as high as 20 to 30%. Postpartum screening rates for diabetes are only about 50%, highlighting the need for improved follow-up care. Evidence-based interventions, including behavioral interventions focusing on diet and exercise, as well as pharmacotherapy like metformin, can help reduce the risk of type 2 diabetes. However, more research is needed on the safety and effectiveness of these interventions during lactation. Primary care physicians play a crucial role in screening for GDM during pregnancy and providing postpartum care to mitigate long-term cardiometabolic risks.
Challenges in Screening and Treating GDM
One of the challenges in managing GDM is the inconsistency in postpartum screening rates, which currently stand at about 50% in the United States. This hinders the identification of individuals who develop prediabetes or type 2 diabetes after GDM. Guidelines suggest screening for diabetes every three years after a GDM-complicated pregnancy, but more high-quality data is needed to inform the optimal screening interval. Additionally, screening for GDM in subsequent pregnancies is an area of active investigation, with the possibility of earlier screening to identify those with early-onset GDM. However, more research is needed to determine the impact of early screening on pregnancy outcomes. Primary care physicians play a vital role in taking a thorough history to identify individuals with a prior history of GDM and providing appropriate screening and follow-up care.
GDM and Lifelong Cardiometabolic Health
GDM is not limited to its impact on maternal health but also has implications for the exposed child's health. Emerging evidence suggests that GDM increases the risk of hypertension, obesity, and diabetes in offspring later in life. Early detection and control of GDM during pregnancy may not significantly mitigate these risks, but further research is needed to fully understand the impact of treatment on long-term childhood health outcomes. The recognition of GDM as a risk-enhancing factor for subsequent cardiovascular disease has prompted larger medical associations to raise awareness and highlight the importance of addressing GDM within the broader context of cardiometabolic health. The challenge now is to fill the gaps in knowledge with more clinical trials and interventions to change the trajectory of long-term cardiometabolic risk associated with GDM.
There are long-term cardiometabolic health risks for individuals with pregnancies complicated by gestational diabetes. JAMA Senior Editor Linda Brubaker, MD, MS, discusses these risks with Kartik K. Venkatesh, MD, PhD, high-risk pregnancy specialist at The Ohio State University. Related Content: