Cardiovascular-related health problems may occur in as many as 1 out of every 7 pregnancies, even among people who don't already have heart disease, according to new research published in the American Heart Association's flagship journal Circulation. A review of more than 56,000 pregnancies occurring between 2001 and 2019 within the Mass General Brigham health care system found a steady rise in cardiovascular-related complications during pregnancy, with conditions affecting approximately 15% of pregnancies.
The increase 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. These increases were driven by a significant rise in health risk factors present before and during pregnancy. Among study participants, obesity 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. The full study can be found at https://www.ahajournals.org/doi/10.1161/CIRCULATIONAHA.125.067512.
Experts emphasize that engaging with a health care provider 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 steps. During pregnancy, staying proactive about health and addressing concerns promptly is essential, while the postpartum period also carries important health considerations that shouldn't be overlooked.
The research highlights valuable opportunities to make heart-healthy choices starting before pregnancy and continuing after birth, which can help prevent cardiovascular disease and support long-term wellness. The American Heart Association provides additional resources and financial information at https://www.heart.org. Studies published in the Association's scientific journals are peer-reviewed, with statements and conclusions representing solely the study authors' views rather than organizational policy.
