Cardiovascular Complications Affect 1 in 7 Pregnancies as Risk Factors Rise Sharply
New research reveals cardiovascular complications impact 15% of pregnancies, driven by increasing rates of obesity, hypertension, diabetes and high cholesterol over the past two decades.
Cardiovascular-related health problems may occur in as many as 1 out of every 7 pregnancies, even among individuals without pre-existing heart disease, according to new research published in the American Heart Association's flagship journal Circulation. A comprehensive review of more than 56,000 pregnancies occurring between 2001 and 2019 within the Mass General Brigham health care system revealed a steady rise in cardiovascular complications during pregnancy, with conditions such as heart attack, stroke, heart failure, blood clots, hypertensive disorders, and maternal death affecting approximately 15% of pregnancies.
The increasing prevalence of complications was most pronounced among individuals with pre-existing cardiovascular conditions but was observed across all age groups and even among those without prior health issues. This trend was directly impacted by a dramatic rise in health risk factors present before and during pregnancy. Obesity rates among study participants increased from 2% in 2001 to 16% in 2019, while high blood pressure rose from 3% to 12%. High cholesterol increased from 3% to 10%, and diabetes grew from 1% to 3% over the same period.
"Most of these health risk factors can be prevented through lifestyle changes or medication. Yet, many of my patients aren't even aware they have these conditions or that they're at risk," said Stacey E. Rosen, M.D., FAHA, volunteer president of the American Heart Association and senior vice president of women's health at Northwell Health. The full study can be found here.
Experts emphasize that engaging with health care providers before, during and after pregnancy is critical to ensure optimal health for both mother and baby. Rosen strongly encourages individuals planning pregnancy to connect with clinicians early to understand risks and take preventive measures. During pregnancy, staying proactive about health and addressing concerns promptly is essential, while the postpartum period also carries important health considerations that should not be overlooked.
The research underscores valuable opportunities throughout the reproductive journey to make heart-healthy choices that can help prevent cardiovascular disease and support long-term wellness. The American Heart Association provides additional resources and financial information available here, with studies published in the Association's scientific journals undergoing peer review to ensure scientific accuracy and reliability.