New Study Explores How Pregnancy Reshapes a Woman's Long-Term Health

Researchers at the University of Rochester Medical Center have launched a major study into how pregnancy affects a woman’s long-term health. Funded by a $2.6 million grant from the National Institutes of Health, the project will track changes in metabolism and body composition from early pregnancy to three years after childbirth. The findings could help identify mothers at risk of future heart disease and diabetes. Over half of women in the U.S. begin pregnancy overweight or obese, and nearly 50% gain more weight than recommended during gestation. These trends have been linked to health risks for both mothers and children. Yet, little is known about how pregnancy’s rapid physiological changes—meant to support a growing baby—may linger long after birth.

The five-year study, led by Susan Groth, PhD, WHNP-BC, FAANP, will monitor weight gain, body composition, and biological markers throughout pregnancy and beyond. Participants will provide data at postnatal visits at six, 12, and 36 months. Researchers will examine how behaviours like breastfeeding, sleep, and exercise influence a mother’s long-term biology. Many assume a woman’s body returns to its pre-pregnancy state within six months of giving birth. However, this idea remains debated. By analysing metabolic shifts over time, the team aims to uncover which changes persist and whether they contribute to later health problems.

The study’s results may reveal new ways to predict and prevent cardiometabolic issues in mothers. Data collected over three years will help clarify how pregnancy reshapes a woman’s health far beyond the postpartum period. The findings could eventually inform guidelines for weight management and lifestyle choices during and after pregnancy.