Rising Maternal Mortality Signals in 14 US Abortion Ban States: New University Study Reveals

A groundbreaking study from researchers at Johns Hopkins Bloomberg School of Public Health has brought renewed attention to maternal health outcomes in the wake of post-Dobbs abortion policies. Analyzing data across 14 states that enacted complete or six-week abortion bans by the end of 2022, the research points to a potential 9.2 percent increase in pregnancy-associated deaths. This metric encompasses any death occurring during pregnancy or within one year postpartum, regardless of cause. The findings, published in the American Journal of Public Health in April 2026, estimate around 68 excess deaths by the end of 2023 in these states, underscoring the complex interplay between reproductive policies and maternal well-being.

Lead investigator Suzanne Bell, an associate professor in Population, Family and Reproductive Health at Johns Hopkins, emphasized the challenges in detecting such changes due to the rarity of these events and data inconsistencies. Yet, the patterns observed suggest that abortion restrictions may contribute to elevated risks, particularly as they coincide with shifts in birth volumes and care access. This academic work builds on a growing body of university-led inquiries into how state-level laws shape health disparities.

Defining Key Terms in Maternal Health Research 🔬

To fully grasp the study's implications, it's essential to distinguish between related but distinct concepts. Maternal mortality refers to deaths during pregnancy or within 42 days postpartum due to obstetric causes. Pregnancy-related mortality extends the timeframe to one year postpartum but limits causes to those tied to pregnancy. Pregnancy-associated mortality, the broadest category used here, includes all deaths within one year of pregnancy end, capturing non-obstetric factors like cardiovascular issues or violence that disproportionately affect pregnant individuals.

These definitions, standardized by bodies like the Centers for Disease Control and Prevention (CDC), allow researchers to track trends systematically. In the U.S., baseline rates hover around 20-30 deaths per 100,000 live births annually, far higher than in peer nations. Factors such as preexisting conditions, racism in healthcare, and rural access gaps exacerbate vulnerabilities, with Black women facing rates three to four times higher than white women.

The 14 States Under the Spotlight

The analysis zeroed in on Alabama, Arkansas, Georgia, Idaho, Kentucky, Louisiana, Mississippi, Missouri, Oklahoma, South Dakota, Tennessee, Texas, West Virginia, and Wisconsin—states that implemented stringent bans shortly after the Supreme Court's Dobbs v. Jackson Women's Health Organization decision in June 2022. Texas led with its six-week restriction via Senate Bill 8 in 2021. By 2026, the landscape evolved, with some states upholding bans amid legal challenges, while others saw partial restorations.

These states share characteristics like higher pre-existing maternal mortality rates and limited obstetric resources. For instance, many rank low in maternity care deserts, areas lacking sufficient providers. This geographic concentration amplifies policy impacts, as individuals often travel out-of-state for care, straining systems further.

Trends Before and After Policy Shifts

Using National Center for Health Statistics data from 2016 to 2023, excluding COVID-19 related deaths to isolate effects, the study revealed diverging trajectories. Non-ban states continued a downward trend in mortality rates, while ban states showed stagnation or upticks. Specifically, pregnancy-associated mortality rose by an estimated 9.2 percent in the 14 states, contrasting with declines elsewhere.

Mechanisms include more high-risk births (carrying 14 times the mortality risk of abortion), care delays due to legal fears among providers, and obstetrician exodus from restrictive areas.

Intersecting Vulnerabilities and Disparities

While aggregate data shows signals of harm, subgroup analyses reveal sharper inequities. Low-income, unmarried, and minoritized women—often reliant on Medicaid—bear disproportionate burdens. Southern states within the 14 saw amplified effects, aligning with longstanding regional health gaps. University researchers note that bans may deter wanted pregnancies from terminating amid complications like eclampsia or fetal anomalies, forcing riskier continuations.

• Black women: Pre-ban rates already 3-4x higher; potential for further elevation.
• Rural residents: Travel burdens intensify in states like Idaho and West Virginia.
• Younger birthers (<35): Higher unexpected birth volumes.

Complementary Insights from Other Academic Studies

Beyond Johns Hopkins, peers at the University of South Carolina published in JAMA Network Open (2026) a synthetic control analysis of the same 14 states. Their findings showed no statistically significant rise—ban states saw modest declines (2.4-3.3 percent)—but wide confidence intervals and short post-ban windows (2023 data) urge caution. Increases appeared among Asian (41 percent) and Black (17.8 percent) groups in some ban states.

Tulane University researchers, using a pre-Dobbs abortion policy index, linked more restrictions to 7 percent higher total maternal mortality (2015-2018). Columbia University's 2026 SMFM presentation tied multiple restrictions (e.g., waiting periods, physician-only rules) to elevated deaths from cardiovascular causes and violence across 27 restrictive states (2005-2023). This JAMA study exemplifies rigorous causal inference from public health schools.

Data Challenges in Capturing True Impacts

Maternal mortality surveillance falters due to underreporting—only 2018 onward required pregnancy checkboxes on death certificates—misclassification, and small numbers yielding unstable rates. COVID skewed 2020-2022 data, prompting exclusions. Experts from UCLA and elsewhere advocate enhanced vital records, including abortion status and intent, for precision.

Longer horizons may clarify trends; 2024-2026 CDC data shows national rates at 22.3 per 100,000 (2023 provisional), with ban states overrepresented in highs.

Public Health Ramifications and Stakeholder Views

Obstetricians report "chilling effects"—delayed interventions fearing prosecution—while pro-life groups highlight overall U.S. declines and stress prenatal support expansions. Economists project $100 billion+ in added healthcare costs from complications. Infants face ripple effects: A 2025 Johns Hopkins companion study estimated 478 excess deaths in the 14 states.

Pathways Forward: Evidence-Based Solutions

Solutions span policy, training, and investment:

• Shield laws protecting providers treating ectopic pregnancies, miscarriages.
• Medicaid postpartum extensions (12+ months) in all states.
• Doula/midwifery integration for culturally competent care.
• Federal data modernization via MOMENTUM Act.
• University-led training in high-risk obstetrics.

Johns Hopkins researchers call for national maternal health focus, transcending politics.

Photo by Maria Oswalt on Unsplash

Academic Contributions and Future Outlook

Higher education drives progress: Bloomberg School's interdisciplinary teams exemplify how epidemiology, biostatistics, and policy analysis converge. Ongoing trials test telehealth expansions; longitudinal cohorts track long-term effects. By 2030, improved data may quantify full Dobbs impacts, informing equitable reforms. For professionals eyeing public health careers, these studies spotlight research-assistant and faculty roles in reproductive epidemiology.