Medicaid expansion under the Affordable Care Act (ACA) has saved an estimated 27,400 lives between 2010 and 2022, according to a 2025 University of Chicago study.

Other research indicates that in specific periods, such as 2014–2017, the expansion saved over 19,000 lives among older adults (ages 55–64).

Obamacare Results

Lower Mortality: Medicaid expansion reduced the risk of death for low-income adults by 2.5% to 20%, according to a study by Becker Friedman Institute.
Age Groups: Younger adults accounted for nearly half of the total life-years saved.
Regional Differences: While 19,200 lives were saved in expansion states, 15,600 older adults died prematurely in states that chose not to expand the program.
Cost Effectiveness: The cost per life saved is estimated at $5.4 million.

The Affordable Care Act (Obamacare) has significantly reduced uninsured rates for minority groups, with Hispanic, Black, and American Indian/Alaska Native (AIAN) populations experiencing the largest gains.

The uninsured rate for Black adults fell from 24.4% in 2013 to 14.4% in 2018.

The Biden/Harris administration utilized targeted Spanish-language outreach and navigator programs to boost enrollment in underserved communities.

Latino marketplace enrollment grew significantly as the uninsurance rate among Hispanic Americans dropped to a historic low of 18%.

Black women in the U.S. face a maternal mortality rate roughly 2.5 times higher than white women. A major risk period occurs after the traditional 60-day Medicaid cutoff, when many new mothers lose health insurance. The crisis disproportionately affects women of color and underserved rural communities

The Biden-Harris administration targeted Black maternal mortality by allowing states to extend postpartum Medicaid coverage from 60 days to 12 full months.

The vast majority of states and territories have adopted this 12-month extension option, significantly lowering the risk of uninsurance and postpartum hospitalizations for marginalized mothers.

Obamacare (ACA) has significantly improved substance abuse (SUD) coverage, providing over 32 million people with access to treatment and reducing mortality.

By expanding Medicaid to 1.6 million people with SUD and mandating coverage for pre-existing conditions, it has enabled widespread access to medication-assisted treatment (MAT) and counseling, with studies indicating a 21% reduction in mortality for new, low-income enrollees

As of early 2026, 10 Republican-led states have not adopted the Affordable Care Act's Medicaid expansion, leaving roughly 1.6 million low-income individuals in a "coverage gap".

President Donald Trump slashed federal Medicaid spending by approximately $1 trillion over a ten-year period (2025–2034) through the One Big Beautiful Bill Act.

An estimated 15 to 17 million Americans are projected to lose health coverage due to federal policy changes and budget cuts under the Trump administration.

Estimates indicate that roughly 13 million Black individuals and 19 million Hispanic individuals rely on Medicaid, placing them at high risk due to recent federal budget cuts and program changes.

Advocacy groups and public health analyses note that funding cuts disproportionately threaten hospitals and clinics located in urban and marginalized communities, potentially worsening health disparities.