Prison Disease: The State of Inmate Healthcare Today
Updated October 13, 2026
Chronic and infectious disease rates run above the general population inside U.S. prisons, with roughly 4 in 10 state prisoners reporting a current chronic condition and hepatitis C the most commonly reported infectious disease, per BJS’ 2016 national survey. Overcrowding and inconsistent intake screening are commonly cited contributing factors, and reform efforts aim to narrow that gap.
Healthcare behind bars isn’t optional. In Estelle v. Gamble (1976), the U.S. Supreme Court held that deliberate indifference to a prisoner’s serious medical needs can violate the Eighth Amendment’s ban on cruel and unusual punishment. That standard applies to convicted prisoners; pretrial detainees’ medical-care claims are instead evaluated under the Fourteenth Amendment’s Due Process Clause, which can set a different bar. Professional and international standards have grown up around that constitutional baseline. The National Commission on Correctional Health Care, which grew out of an American Medical Association program from the early 1970s, became an independent nonprofit in 1983 and sets accreditation standards for correctional facilities. In 2015, the UN General Assembly adopted the Nelson Mandela Rules as an international, not U.S., minimum standard for how incarcerated people should be treated.
None of that guarantees the standard gets met in practice. Overcrowded, understaffed facilities make compliance harder, and new laws like the 2018 First Step Act (discussed below) target some of the underlying pressures. The numbers below show how much of a gap remains, based largely on BJS’s 2016 Survey of Prison Inmates, the most recent national health survey of its kind.
What COVID-19 Exposed
The 2020 pandemic exposed just how little room facilities had to maneuver. During the first wave, the Federal Bureau of Prisons reported more than 1,500 positive cases among federal inmates by mid-April 2020, and a Harvard Kennedy School–NCCHC survey of more than 320 correctional facilities found correctional staff accounted for the largest share of documented cases. A dorm with 35 bunks leaves little room for social distancing.
In response, then-Attorney General William Barr ordered the Bureau of Prisons to expand home confinement for high-risk inmates, and courts in places like Spokane, Washington and several Alabama counties released some low-level and pretrial detainees. Those were emergency, pandemic-specific actions rather than permanent policy changes, though they’re often cited in later debates about how quickly prison populations can be adjusted when circumstances demand it.
Disease and Health Conditions Behind Bars
The data below comes from BJS’s 2016 Survey of Prison Inmates, the most comprehensive national health survey of the incarcerated population to date. It’s also nearly a decade old, so treat these as historical lifetime-prevalence figures rather than a current snapshot. Four categories stand out: chronic disease, infectious disease, mental illness, and substance use disorder.
Chronic Disease
The Centers for Disease Control and Prevention defines a chronic disease as one lasting a year or more that requires ongoing care or limits daily activity: diabetes, high blood pressure, asthma, heart disease. In BJS’s 2016 Survey of Prison Inmates, 51% of state and 43% of federal prisoners reported ever having had a chronic condition, and 40% of state and 33% of federal prisoners reported having one at the time of the survey. High blood pressure was the most commonly reported chronic condition.
Infectious Disease
Crowded housing and inconsistent access to hygiene supplies and timely care are commonly cited risk factors for disease transmission in correctional settings, though conditions vary by facility. Tuberculosis, HIV/AIDS, hepatitis, and other sexually transmitted infections (STIs) were among the infectious diseases tracked in the same 2016 BJS survey, which found 17% of state and 10% of federal prisoners reported ever having had an infectious disease. Hepatitis C was the most commonly reported infectious disease in that survey, at 10% of state and 4% of federal prisoners.
Mental Illness
BJS’s companion report on the 2016 survey found 43% of state and 23% of federal prisoners reported a lifetime history of a mental health problem, a broader measure than a clinical diagnosis of serious mental illness. People with a history of mental illness are also more likely to be arrested, and a 2019 Treatment Advocacy Center analysis of New York state arrest data from 2010–2013 found that serious mental illness increased the likelihood of incarceration following a misdemeanor charge by more than 50%, after controlling for race, offense severity, and prior arrest history. Separately, the same BJS survey found 14% of state and 8% of federal prisoners met the clinical threshold for serious psychological distress in the 30 days before being interviewed, a different and narrower measure than lifetime history, and women in both systems were more likely than men to meet it. The National Institute of Mental Health tracks correctional mental health as a research priority.
Substance Use and Addiction
In the same 2016 survey, BJS found an estimated 49% of state and 32% of federal prisoners met DSM-IV criteria for a substance-use disorder in the 12 months before their current sentence began.
Women Behind Bars Have Different Needs
Women are the fastest-growing part of the incarcerated population under most measures. According to The Sentencing Project, the number of women held in state and federal prison rose from 26,326 in 1980 to 186,244 in 2023, an increase of more than 600%; that comparison covers the prison population specifically and doesn’t include jails.
Pregnancy is one issue unique to this population. BJS ran its first-ever national maternal health data collection in 2024, covering 2023, and found that about 2% of women tested at admission that year were pregnant, down from roughly 4% in the 2016 survey this page previously cited. That drop could reflect a real change, or it could reflect how little this data has historically been tracked; BJS itself notes that comprehensive national data on incarcerated pregnancy didn’t exist before this collection. Based on the earlier 2016 BJS data, roughly half of pregnant women in state prison reported receiving any prenatal care beyond an initial obstetric exam. NAMI reports that incarcerated women are about twice as likely as incarcerated men to have a serious mental health condition, a gap often linked to a history of abuse.
Policy has started to catch up, though protections still vary by state. The Federal Bureau of Prisons’ Female Offender Manual sets oversight requirements specific to women’s facilities, and a 2017 BOP operations memo mandated free access to menstrual products in federal facilities; reporting at the time confirmed the change. At the state level, a November 2025 multi-university research brief found 35 states and the federal BOP require menstrual products in correctional facilities, with 28 of those specifying the products must be free; whether products must be available on request or without one varies by state.
A federal bill aimed at similar protections, the Dignity in Prison for Incarcerated Women Act, was reintroduced in the Senate in 2019 but died in committee, as it had the year before, and hasn’t been reintroduced since. Several states have since passed their own “Dignity for Incarcerated Women” laws, though the provisions differ by state. Pennsylvania’s 2023 version, for example, guarantees new mothers bonding time with a newborn and codifies free menstrual products; Arizona’s and Mississippi’s laws address an overlapping but not identical set of issues. Check the specific statute in any given state rather than assuming the laws match.
How Can We Improve the Health of Inmates?
Better inmate healthcare depends on action at every level, federal, state, and individual.
Reduce the Prison Population
Two separate BJS snapshots put the total incarcerated population at roughly 1.9 million combined, though they’re measured at different points: 1,254,200 people in state and federal prison at year-end 2023, and 657,500 people in local jails at midyear 2024. Comparing the two gives a rough sense of scale rather than a single point-in-time national count. That combined figure is still notably lower than the roughly 2.2 million this page previously cited, which was based on older data.
Overcrowding is commonly linked to several of the problems above, including faster disease spread, strained staffing, delayed care, and more opportunities for violence, though the degree varies by facility.
The tide started turning in 2011, when the U.S. Supreme Court ruled in Brown v. Plata that California’s overcrowded prisons violated the Eighth Amendment. In the years that followed, several states made significant cuts: California’s prison population fell 36% from its peak, while Michigan, Connecticut, Mississippi, Rhode Island, and South Carolina each cut theirs by 14% to 15% over a multi-year period following the ruling.
On the federal side, the 2018 First Step Act included several relevant provisions: an actuarial risk and needs assessment system to guide programming, earned time credits that qualifying prisoners can apply toward earlier transfer to prerelease custody or supervised release, placement closer to an inmate’s home where possible, and expanded access to medication. The Act also made certain provisions of the 2010 Fair Sentencing Act retroactive, letting some people sentenced under the older, harsher crack-cocaine guidelines petition for reduced sentences. None of this was designed primarily as healthcare reform, though a less crowded system changes some of the conditions described above.
Catch Problems Early
CDC’s current guidance for correctional and detention settings recommends testing all persons at intake for HIV, hepatitis B and C, and several STIs, with opt-out screening (testing everyone unless they decline) specifically recommended for HIV, gonorrhea, chlamydia, syphilis, and trichomonas. BOP’s own clinical guidance confirms an opt-out strategy is recommended for all sentenced federal inmates at intake. Adoption has grown: as of 2023, 58% of the 50 state and federal jurisdictions BJS surveyed reported conducting opt-out HIV testing during intake, up from roughly 1 in 5 prison systems reporting the practice a decade earlier.
Hepatitis C testing hasn’t caught up at the same pace nationally. A 2014 survey by the American Association for the Study of Liver Diseases found only 16% of prison facilities tested every incoming inmate for hepatitis C, well before CDC updated its guidance. A comparable current national figure doesn’t appear to exist. What’s available instead is a patchwork of state-level studies: Pennsylvania, Massachusetts, and California have each measured their own opt-out HCV testing adoption independently, with results varying widely by facility.
Actually implementing consistent screening nationwide takes money and political commitment that not every jurisdiction has.
Monitor and Assess
There’s no single, uniform national standard governing how a correctional facility’s healthcare system must be run; requirements instead come from a mix of constitutional case law, federal statutes and regulations, state law, and agency-specific policy. A 2018 Pew Charitable Trust review of state-run systems found policymakers often lack the data they’d need to evaluate whether their own healthcare systems are working, which makes well-documented state programs worth studying as models.
Training for Corrections and Healthcare Staff
Correctional officer training requirements vary by state and agency, and have historically emphasized security over medical response. In a 2015 survey by Corrections1 (formerly CorrectionsOne), officers who responded said they wanted more training in recognizing mental illness, understanding fitness standards, and basic CPR and life-saving care, a reflection of respondents’ own stated preferences rather than a comprehensive national requirement.
Several programs exist for staff who want that training. NCCHC offers Health Training for Correction Officers, the CDC provides TB training materials specific to correctional staff, and the American Correctional Association’s Correctional Behavioral Health Certification (CBHC) is available to correctional officers, community corrections officers, and allied behavioral health staff who meet its training and experience requirements. These are professional certifications, not state occupational licenses; clinicians working in correctional healthcare, physicians, nurses, psychologists, counselors, and social workers, are licensed separately by their own state’s professional boards.
Inmates have rights worth understanding too. The ACLU’s Know Your Rights: Medical, Dental, and Mental Health Care guide explains what inmates can request and how.
What Families Can Do
If a family member isn’t getting needed care, a few steps are generally worth trying, though what’s actually possible depends on the facility’s policies, the inmate’s custody status, and applicable privacy law. An outside doctor may, in some cases, be able to communicate with facility medical staff, subject to the facility’s own authorization requirements; ask the facility what it requires. Contacting the facility’s healthcare providers directly is usually the first step, and escalating to the medical director’s office is a reasonable next move if that doesn’t resolve things. The Center for Health and Justice Transformation (formerly the Center for Prisoner Health and Human Rights) is a research and advocacy hub for correctional health issues, and some states have legal services organizations that can advocate on an incarcerated person’s behalf.
Resources
Government Agencies
- National Institute on Drug Abuse—Criminal Justice
- Substance Abuse and Mental Health Services Administration—Criminal and Juvenile Justice
- Federal Bureau of Prisons
- Centers for Disease Control and Prevention—Correctional Health
Professional and Accreditation Organizations
- National Commission on Correctional Health Care
- Academy of Correctional Health Professionals
- American Correctional Health Services Organization
- American College of Correctional Physicians
- American Correctional Association
- American Jail Association
Media and Professional Information
Advocacy and Research Organizations
- Center for Health and Justice Transformation (formerly the Center for Prisoner Health and Human Rights)
- Penal Reform International — Healthcare
- Prison Policy Initiative
- The Marshall Project
- American Civil Liberties Union (ACLU)
Frequently Asked Questions
What is the most common infectious disease among prisoners?
In BJS’s 2016 Survey of Prison Inmates, the most recent national data of its kind, hepatitis C was the most commonly reported infectious disease: 10% of state and 4% of federal prisoners said they’d ever had it.
Why do disease rates run higher in prisons than outside them?
Several factors are commonly cited, including overcrowding, inconsistent access to hygiene supplies, uneven intake screening, and delays in treatment, though the exact contribution of each hasn’t been precisely isolated in the available research.
What rights do inmates have to medical care?
Under Estelle v. Gamble (1976), the Supreme Court held that deliberate indifference to a prisoner’s serious medical needs can violate the Eighth Amendment. That standard applies to convicted prisoners; pretrial detainees’ claims are evaluated under the Fourteenth Amendment’s Due Process Clause instead. In both cases, the focus is on whether officials were deliberately indifferent, not simply whether care could have been better.
Do prisons test everyone for HIV and hepatitis C when they arrive?
Not universally. As of 2023, 58% of the state and federal jurisdictions BJS surveyed used opt-out HIV testing at intake. Hepatitis C testing lags behind that based on the limited state-level data currently available.
What can a family member do if an incarcerated relative isn’t getting care?
Contacting the facility’s medical staff directly is usually the first step, though what they can share depends on privacy rules and facility policy. If that doesn’t work, escalating to the medical director’s office or a state legal services organization for incarcerated people is a reasonable next move.
Key Takeaways
- The system is commonly linked to the gap, not just the population – Overcrowding, inconsistent screening, and understaffing are regularly cited as contributing to poor health outcomes and disease transmission, though no single figure isolates each factor’s effect.
- Screening is improving but unevenly – Opt-out HIV testing has grown to 58% of surveyed jurisdictions as of 2023, but hepatitis C testing adoption remains harder to measure nationally.
- Women’s needs are distinct, and the population is growing – The female prison population rose more than 600% between 1980 and 2023, and state-level policy on pregnancy care and hygiene products still varies.
- Population counts are trending down from past highs – Combined BJS prison and jail snapshots put the total near 1.9 million, below the roughly 2.2 million figure this page previously cited.
Want the bigger picture on how correctional health connects to the rest of the system? The Center for Health and Justice Transformation above tracks ongoing research and policy work in this space, and the ACLU’s Know Your Rights guide is worth bookmarking if you or someone you know needs it.