The Landscape of School-Based Mental Health Services

Published: Sep 11, 2025

Editorial Note

This analysis, originally published on September 6, 2022, was updated on September 11, 2025 to incorporate the latest developments and data.

Nearly one in five students attending public schools in the United States utilize school-based mental health services, underscoring how schools can serve as an access point for mental health treatment among youth. Federal policy measures, including the Bipartisan Safer Communities Act, the American Rescue Plan Act, and changes to Medicaid guidance, provided pathways to expanding and improving access to school-based services. However, recent actions – such as cuts to the Department of Education, the freezing of $1 billion allocated for school-based mental health services, and major reductions to Medicaid – may cause disruptions. Some school programs have already reported concerns with providing mental health services in the wake of these recent actions, including programs in New York, North Carolina, and Texas. These disruptions come at a time when approximately 1 in 5 teens are experiencing symptoms of anxiety or depression and many youth have reported bullying and exposure to violence, which can have adverse effects on their mental health. Additionally, a 2024 KFF survey found differences in receipt of mental health care services by race and ethnicity, with a larger share of White parents compared to Black, Hispanic, and Asian parents reporting that their children received these services in the past three years.  

This issue brief explores the landscape of mental health services, including services offered, utilization, barriers, and funding, and how recent federal actions may affect school-based mental health care. This analysis draws upon survey data collected directly from public school administrators via the School Pulse Panel,1 a study by the National Center for Education Statistics and the U.S. Census Bureau that surveys schools monthly on a variety of topics, including school mental health services. Key Findings include:

  • In the 2024-2025 school year, 18% of students utilized school-based mental health services.
  • About one-third of schools reported they strongly (11%) or moderately disagreed (25%) that they could effectively provide mental health services. Barriers to providing mental health care services to students include funding and mental health provider shortages.
  • Ninety-seven percent of schools provide at least one mental health service to students. In recent years, larger shares of these schools provide services via telehealth, and provide group-based and family interventions.
  • Seventy percent of public schools that provide mental health services had a school or district-employed licensed mental health professional on staff and 57% employed an external mental health provider.
  • Thirteen percent of schools did not have mental health services available for staff in the 2024-2025 school year.

Background

School-based mental health services can improve access to care, allow for early identification and treatment of mental health issues, and may be linked to reduced absenteeism and better mental health and substance use outcomes. School-based services can also reduce access barriers for underserved populations, including children from low-income households and children of color.

The delivery of mental health services in schools has evolved over time and continues to vary across schools. Some students access in-person mental health services at schools or near campus while others access services through telehealth. Service delivery can range from a single provider (who is not necessarily a licensed mental health professional) to a team of providers, including psychologists, social workers, and academic or guidance counselors. A growing number of schools have also integrated social and emotional learning and other mental health literacy programs into their curriculum.

Schools receive support for providing mental health services in several ways. This includes support at the federal level through the Department of Education and the Department of Health and Human Services. A recent federal measure, the Bipartisan Safer Communities Act (BSCA) of 2022, included provisions to support and expand school-based mental health services, such as $1 billion to increase the number of mental health providers in schools and provide training. However, in April 2025, under the Trump Administration, the Department of Education announced the cancellation of these funds. Additionally, President Trump signed an executive order in March 2025 to dismantle the Department of Education, an entity which has developed guidance regarding school-based health services in partnership with Medicaid and provides resources and grants to support mental health, anti-bullying, and trauma-prevention interventions in schools.

Schools can also receive support through Medicaid, including reimbursement for medically necessary services that are part of a student’s Individualized Education Plan (IEP), reimbursement for eligible health services for students with Medicaid coverage and for some administrative services. In 2022 and 2023, CMS issued guidance to increase the accessibility of these services by eliminating some of the practical barriers that schools faced when delivering services through Medicaid. However, significant changes to Medicaid, including budget cuts, in the reconciliation bill passed in July 2025 may impact how Medicaid can support school services in the future. In 2023, nearly four in ten children in the U.S. had Medicaid coverage.

What Share of Students Utilize School-Based Mental Health Services?

In the 2024-2025 school year, public schools reported that on average 18% of students utilized school-based mental health services. Additionally, 58% of schools reported that the number of students who sought school-based mental health services increased since the prior school year. Similarly, there was a 61% increase from the 2023-2024 school year to the 2024-2025 school year in concerns expressed by staff about students exhibiting depression, anxiety, trauma, or emotional dysregulation/disturbance.

What Have Schools Said About Their Ability To Provide Mental Health Services To Students?

In the 2024-2025 school year, approximately half of public schools reported they could effectively provide mental health services to all students in need. This includes 10% of schools that say they strongly agree they could effectively provide mental health service and 42% that moderately agreed. Meanwhile, about one-third of schools reported they strongly (11%) or moderately disagreed (25%) that they could effectively provide mental health services and 11% neither agreed or disagreed. These shares have remained mostly similar since survey data collection began in the 2021-2022 school year.

Among the schools that did not strongly believe they could effectively provide mental health services to students in need, inadequate funding and mental health provider shortages have remained the most frequently reported limitations since the 2021-2022 school year (Figure 1).

Top 5 Factors Limiting Schools' Ability to Effectively Provide Mental Health Services to Students (Grouped Bars)

However, the share reporting inadequate funding has increased over time (from 47% in 2021-2022 to 56% in 2024-2025), while the share reporting insufficient mental health staff coverage and access to licensed professionals has slightly decreased over the same period (from 61% to 55% and from 57% to 51%, respectively). These changes may reflect recent federal efforts to increase the number of school mental health professionals but also the end of federal pandemic-era funds. Further, many schools continue to not meet recommended ratios for psychologists to students (500:1) or counselors to students (250:1). Among schools with staffing vacancies in the 2024-2025 school year, 28% of public school administrators feel they are understaffed with mental health providers.

What Mental Health Services Are Offered to Students?

In the 2024-2025 school year, 97% of public schools reported offering at least one type of mental health service to their students. As shown in Figure 2, the most frequently offered services are:

  • Individual-based intervention like one-on-one counseling or therapy (83% of public schools)
  • Case management or coordinating mental health services (70%), and
  • Referrals for care outside of the school (67%).

The use of telehealth to deliver mental health treatment has increased from 17% to 22% between the 2021-2022 and 2024-2025 school years. While telehealth became a more widely used pathway to delivering health care since the pandemic, a growing number of schools were already providing care through telehealth prior to the pandemic.

Group-based interventions increased between the 2021-2022 and 2024-2025 school year (from 56% to 65%), as well as family interventions (from 38% to 43%).

Mental Health Services Offered by Public Schools, by School Year (Grouped Bars)

Only about one-third of schools provide outreach services, which includes mental health screenings for all students. These universal behavioral health screenings are considered a best practice and allow for schools to better identify all students with needs and tailor services to their specific student population. However, many schools do not offer these screenings often due to a lack of resources or difficulty accessing providers to conduct screenings, burden of collecting and maintaining data, and/or a lack of buy-in from school administrators.

Who Provides Mental Health Services in Schools?

Staffing models for school-based mental health care can vary across schools. In the 2024-2025 academic year, 76% of public schools that provide mental health services had two or more types of mental health providers while 24% have one type of provider. In the same year, 70% of these public schools had a school or district-employed licensed mental health professional on staff and 57% had an external mental health provider (Figure 3).

Types of Providers for School-Based Mental Health Services, by School Year (Grouped Bars)

Between the 2021-2022 and 2024-2025 school years, there was a decrease in the share of public schools reporting that school counselors (from 83% to 73%) or school nurses (from 25% to 16%) provided mental health services to students (Figure 3). These decreases may be reflective of schools expanding their mental health teams in recent years so that they are less reliant on general counselors and medical staff. While general or academic school counselors can provide mental health services to students, they are not equipped to offer long-term care.

Teachers often play a role in identifying students with mental health needs and linking them to care, although prior research suggests  that many teachers may not be adequately trained to do so. In the 2024-2025 school year, 61% of schools reported providing trainings and professional development to staff in order to help them support the emotional and mental health of school students. Data on the impact of these trainings is unavailable and it is unclear what share of schools provided trainings in the years prior.

How Do Schools Receive Funding For The Mental Health Services They Provide?

School mental health services are supported through multiple sources of funding at the national, state, and local level. In recent years, a growing share of public schools reported receiving funding for mental health services from district or school funds (from 58% in 2021-2022 to 65% in 2024-2025) or partnerships with organizations (from 38% in 2021-2022 to 44% in 2024-2025) (Figure 4). Note that the School Pulse Panel survey questionnaire does not specify which funds are from Medicaid.

Funding Sources for School-Based Mental Health Services, by School Year (Grouped Bars)

The share of public schools receiving funding from federal grants or programs has decreased from 53% in 2021-2022 to 33% in 2024-2025. This change may be due to the cessation of pandemic-era relief funds, like the Elementary and Secondary School Emergency Relief (ESSER) funds, which provided schools with the financial resources to address increasing concerns about student mental health. In 2022, the Bipartisan Safer Communities Act allowed for new funding sources to support school-based mental health services, however the Trump Administration froze $1 billion in funding in 2025. 

What Mental Health Services Are Available For Staff?

Teachers and other school staff play a multitude of roles, including monitoring students’ mental health and providing support as needed. Burnout, driven by anxiety, depression, and low job satisfaction is prevalent among teachers. In the 2024-2025 academic year, 36% of staff reported that they have seen an increase in staff expressing concerns about themselves or their colleagues showing signs of depression, anxiety, emotional dysregulation or trauma since the prior school year. While many schools offer mental health services for staff, 13% of schools do not (Figure 5).

Mental Health Services Available to Staff Among Public Schools, 2024-2025 School Year (Bar Chart)

Sasha Zitter, formerly with KFF, contributed to this analysis.

  1. The School Pulse Panel utilizes a random stratified sample of the Common Core of Data, a universe of public schools. This stratified sample includes public and public charter schools, schools with magnet programs, alternative schools, special education schools, and vocational schools. Approximately 4,000 schools were included in the sample for the 2024-2025 school year. Approximately 1,600 schools responded to the March survey – findings from this survey are included in this brief. There has been some variation in the number of schools that respond each month. While school principals are the initial point of contact to complete the survey, they may invite other school and district staff to assist with completion. Published data is weighted and adjusted to account for non-response. ↩︎

House Committee on Appropriations Approves FY 2026 Labor, Health and Human Services, Education, and Related Agencies (Labor HHS) Appropriations Bill & Accompanying Report

Published: Sep 11, 2025

The House Committee on Appropriations approved its FY 2026 Labor, Health and Human Services, Education, and Related Agencies (Labor HHS) appropriations bill, accompanying report, and amendments on September 9, 2025. While most U.S. global health funding is provided to the State Department through a separate appropriations bill, the Labor HHS appropriations bill includes funding for global health programs at the Centers for Disease Control and Prevention (CDC) as well as funding for global health research activities at the National Institutes of Health (NIH).

Global health funding amounts specified in the House FY 2026 Labor HHS appropriations bill are as follows (some amounts are not yet known):

  • Centers for Disease Control and Prevention (CDC): The bill eliminates funding for several programs at the CDC’s Center for Global Health including: 1) Global HIV/AIDS; 2) Global Tuberculosis; and 3) some global vaccination activities. [i] The bill maintains CDC’s funding at the prior year (FY 2025) level for global polio vaccination and Global Public Health Protection programs, and transfers funding for Parasitic Diseases and Malaria from the Center for Global Health to the National Center for Emerging and Zoonotic Infectious Diseases, but does not specify an amount.
  • National Institutes of Health (NIH): Funding for global health research activities at the Fogarty International Center (FIC) at NIH matches the prior year (FY 2025) amount. Funding for other global health research activities (i.e., global HIV/AIDS and malaria research) at NIH is not yet known because it is determined at the agency level rather than specified by Congress in annual appropriations bills.[ii]

See the table below for additional details on global health funding (downloadable table here). See other budget summaries and the KFF budget tracker for details on historical annual appropriations for global health programs.

KFF Analysis of Global Health Funding in the FY 2026 House Labor, Health and Human Services, Education, and Related Agencies (Labor HHS) Appropriations Bill (Table)

[i] Funding for FY25 was provided in a full-year Continuing Resolution (CR), which maintained FY24 levels. All FY25 amounts and associated notes are based on those specified in relevant FY24 appropriations bills.

[ii] The House FY26 Labor HHS appropriations bill states that “Of the amounts made available in this Act for NIH, the amount for research related to the human immunodeficiency virus, as jointly determined by the Director of NIH and the Director of the Office of AIDS Research, shall be made available to the ‘Office of AIDS Research’ account.”


Potential Story Lines from Trump-Era Health Care Cuts

Author: Larry Levitt
Published: Sep 11, 2025

In his latest column for the JAMA Health Forum, KFF’s Larry Levitt talks about how popular shows like “The Pitt” can make changes to the health care system stemming from this year’s federal tax and budget bill tangible for viewers, and offers five suggested story lines that would illustrate how health care is changing under the Trump administration.

VOLUME 30

Changing COVID-19 Booster Policies and Florida’s Decision to End Vaccine Mandates Create Confusion


Summary

This volume explores confusion around COVID-19 booster eligibility as federal recommendations shift and conflicting guidance from physician organizations creates uncertainty for patients. It also looks at Florida’s decision to end school vaccine mandates, with some social media users confusing it with a statewide vaccine ban. Lastly, it highlights research demonstrating that artificial intelligence chatbots can provide generally sound advice for cardiovascular health, but struggle to make specific and personalized recommendations.


Recent Developments

Online Discussion Reflects Confusion About COVID-19 Booster Eligibility

Thanasis / Getty Images

Conversation about COVID-19 vaccines and boosters on social media in late August and early September reflected confusion about eligibility following an FDA decision to only approve updated booster shots for people age 65 and older, or with underlying health conditions. The limited approval represents a shift from previous recommendations that included healthy children and young adults. The change follows a May announcement by the Centers for Disease Control and Prevention (CDC) that COVID-19 vaccines would no longer be recommended for healthy pregnant people and only after a shared clinical decision-making process for healthy children. Online reaction to the FDA decision combined praise for Secretary of Health and Human Services (HHS) Robert F. Kennedy Jr. with the spread of false vaccine safety claims. Kennedy’s post about the announcement on X received 77,000 likes and 15,000 reposts, including endorsements from influential accounts with follower counts ranging from over 100,000 to more than a million. Some reposts praised the decision and repeated claims that COVID-19 vaccines are unsafe for human use, while others shared anecdotal stories of health decline following mRNA vaccination. Others, though, expressed concern about their ability to receive the updated vaccines, which specifically target the currently circulating variants of the virus.

In contrast with official guidance from government agencies, leading physician organizations, including the American Academy of Pediatrics (AAP) and American College of Obstetricians and Gynecologists (ACOG), have issued broader guidelines for COVID-19 boosters, consistent with their past recommendations. These guidelines cite evidence that vaccines prevent severe illness and death in healthy children and pregnant people. Historically, these organizations’ guidelines have generally aligned with federal agencies, but recent conflicting vaccine recommendations may contribute to confusion and varying levels of trust. KFF’s July Tracking Poll on Health Information and Trust found that personal doctors or health care providers remain the most trusted source for information about vaccines, with 83% of adults saying they trust their doctor “a great deal” or “a fair amount” to provide reliable vaccine information. Only 57% say they have the same level of trust in the CDC.

The conflicting guidance and confusion about eligibility comes after the KFF poll found that most adults do not plan to receive the updated COVID-19 vaccine this fall. Most of the public (59%) said they would “probably not” or “definitely not” get the booster, while one-third (33%) of adults said they were concerned that the vaccine would not be available to them. Black and Hispanic adults, who have been disproportionately affected by COVID-19, were among the most concerned about access to this fall’s vaccine. HHS Secretary Kennedy indicated in a post on X that the boosters would remain available for all patients who wish to receive them after consulting with a doctor. Kennedy later reiterated that claim in testimony before a Senate panel, referring to the practice of off-label prescribing, which occurs when a doctor prescribes a drug for a use not approved by the FDA. Prescriptions have not been required for previous formulations of the booster vaccines, and some doctors and pharmacists have expressed hesitancy to prescribe the updated boosters for off-label use. Insurance coverage may also be affected; insurers are generally required to cover vaccines recommended by the ACIP and adopted by the CDC. The advisory committee is expected to issue its updated vaccination guidelines this month.

Some Social Media Users Conflate Florida’s Move to End School Vaccine Mandates with a Vaccine Ban

10’000 Hours / Getty Images

Confusion about vaccine eligibility also appeared in online reaction to a Florida proposal to end school mandates for routine childhood vaccination, with some posts misrepresenting the policy shift as a statewide ban on vaccines. Florida’s Surgeon General announced in early September that the state planned to end all vaccine mandates, including those required for school entry. KFF’s monitoring of social media indicated that there were more posts on X about vaccines on the day of the announcement than at any other point this year thus far. Some posts observed in KFF’s monitoring of social media mistook the Florida policy for a “ban” of vaccines, but government officials framed the decision as removing requirements while keeping vaccines available to families who choose them. Prior to this decision, all 50 states had required children starting school to be vaccinated against transmissible diseases, including measles, mumps, and rubella (MMR).

The proposed policy change comes as childhood vaccination rates are declining and falling below levels that epidemiologists say are needed to prevent disease outbreaks. An August KFF issue brief detailed that nationwide, the MMR vaccination rate has fallen below the federal target of 95% in every year since 2020. Some states, including Florida, had lower rates of coverage, with just 89% of kindergarteners in Florida vaccinated against MMR in the 2024-2025 school year. Despite the move to eliminate mandates,  findings from a KFF-Washington Post survey show that most Florida parents support public school vaccine mandates. 82% of Florida parents, and 81% of parents nationwide, said they believed public schools should require vaccines for measles and polio, with some religious or medical exemptions.

The Florida announcement comes as officials in some other states have indicated plans to make their own vaccine recommendations, expressing concerns about federal vaccine policy decisions by the Trump administration. Some vaccinologists have warned that diverging state and federal guidance could broadly undermine trust in vaccines and public health institutions and leave parents unsure about which guidance to follow.


AI & Emerging Technology

Chatbots Perform Well for Heart Health Advice, But Struggle with Details

KFF / Unsplash

A recent study published in Cureus evaluated how well four leading artificial intelligence (AI) chatbots perform in providing advice for cardiovascular health, finding that most AI models can generally offer sound guidance but fall short in delivering specific, actionable recommendations. Researchers tested ChatGPT, Claude AI, DeepSeek AI, and Google Gemini using 15 standardized questions drawn from diet and exercise guidelines published by organizations like the American Heart Association (AHA) and European Society of Cardiology (ESC). Medical professionals then rated the appropriateness of the chatbots’ responses, finding that all responses to questions about physical activity met established standards. Of the questions about diet, 90% of responses from ChatGPT, Claude, and DeepSeek met established standards, while Gemini performed slightly worse at 80%.

The study revealed limitations despite the generally positive results. While the chatbots’ recommendations were not dangerous, they sometimes went beyond official guidelines in ways that could be helpful for healthcare providers to understand. For example, the models sometimes suggested activities like yoga, tai chi, and water aerobics that were not included in cardiovascular disease association guidelines but may appeal to patients seeking more holistic or natural approaches to heart health. In response to questions about diet, the models struggled with dietary specifics, failing to provide precise quantitative guidelines on carbohydrate and added sugar intake. Gemini, for example, recommended consuming less added sugar, but did not include the specific recommendation from both the AHA and ESC that added sugars should account for less than 10% of total caloric intake.

The research suggests that as patients increasingly turn to AI for health information, healthcare providers may benefit from being aware of the types of advice patients are receiving from these sources. Increased awareness could help clinicians provide more comprehensive medical guidance that acknowledges patients’ interest in alternative approaches while ensuring they receive evidence-based care. While these AI tools can effectively supplement guidance from medical professionals, they can not replace personalized, quantitative recommendations that may be offered by physicians or other licensed providers like nutritionists or dieticians. Users should verify AI-generated health advice with their healthcare providers before making significant lifestyle changes.

About The Health Information and Trust Initiative: the Health Information and Trust Initiative is a KFF program aimed at tracking health misinformation in the U.S., analyzing its impact on the American people, and mobilizing media to address the problem. Our goal is to be of service to everyone working on health misinformation, strengthen efforts to counter misinformation, and build trust. 


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Support for the Health Information and Trust initiative is provided by the Robert Wood Johnson Foundation (RWJF). The views expressed do not necessarily reflect the views of RWJF and KFF maintains full editorial control over all of its policy analysis, polling, and journalism activities. The data shared in the Monitor is sourced through media monitoring research conducted by KFF.

About Half of Adults with ACA Marketplace Coverage are Small Business Owners, Employees, or Self-Employed

Published: Sep 10, 2025

The enhanced premium tax credits, created under the American Rescue Plan Act (ARPA) and later extended through the Inflation Reduction Act (IRA), have reduced premiums for millions of Marketplace enrollees. They have also contributed substantially to Marketplace enrollment more than doubling to 24.3 million people in 2025.

Currently, over nine in 10 enrollees (92%) receive some amount of premium tax credit. If these enhanced tax credits expire at the end of 2025, out-of-pocket premiums would rise by over 75% on average for the vast majority of individuals and families buying coverage through the Affordable Care Act (ACA) Marketplaces. Additionally, insurers are proposing an increase in gross premiums (before premium tax credits are applied) of 18%, partly due to the impact on the risk pool of the expiration of enhanced premium tax credits. This double-digit increase would affect government costs for tax credits, as well as Marketplace enrollees not receiving premium assistance.

Much of the discussion about the ACA Marketplaces centers on individuals and families buying coverage on their own. However, many enrollees are connected to small businesses or are self-employed. A previous KFF analysis found that 38% of adult individual market enrollees under age 65 making over 400% of the federal poverty line (FPL) are self-employed, compared to 7% of adults (ages 19-64 years) with incomes over four times poverty nationally. If the enhanced premium tax credits expire, individuals and families with household incomes over 400% FPL would no longer be eligible for any premium tax credits, leaving them with the full cost of their health insurance premium.

Using data from the Current Population Survey (CPS) Annual Social and Economic Supplement, we estimate that 48% of adults under age 65 enrolled in individual market (direct purchase) coverage are either employed by a small business with fewer than 25 workers, self-employed entrepreneurs, or small business owners. In other words, about half of adult enrollees in the individual health insurance market – the vast majority of which is purchased through the ACA Marketplaces – is affiliated with a small business. For context, 16% of all adults under age 65 nationwide are employed by a small business or are self-employed.

Nearly Half of Adult Individual Market Enrollees Work for a Small Business or Are Self-Employed (Column Chart)

For many employees of small businesses and self-employed individuals, the individual market functions as their main source of comprehensive health insurance outside of traditional employer coverage. Unlike larger firms, small businesses are less likely to offer health benefits to their employees, leaving workers and entrepreneurs dependent on the affordability and stability of the individual market.

The enhanced premium tax credits have lowered premium costs for enrollees across the Marketplaces. If those subsidies expire as scheduled at the end of 2025, individual market enrollees—including many people tied to small businesses—would face higher out-of-pocket premiums.

Methods

The data above is based on KFF analysis of 2024 CPS Annual Social and Economic Supplement. The analysis includes adults under age 65 who directly purchase their health insurance and are not currently students. People were considered to be self-employed or employed by a small business if they self-reported being self-employed or working at a business with between one and 24 employees. Employer size is measured for the primary job in the previous year, and may be different at the time of the survey.

Health Costs Associated with Pregnancy, Childbirth, and Infant Care

Published: Sep 9, 2025

Pregnancy is one of the most common causes of hospitalization among non-elderly people. In addition to the cost of the birth itself, pregnancy also involves costs associated with prenatal visits as well as treatment for psychological and medical conditions that can arise during pregnancy, birth, and the postpartum period.

This analysis examines the health costs associated with pregnancy, childbirth, post-partum care, and infancy using a subset of claims from the Merative MarketScan Encounter Database from 2021 through 2023 for enrollees with employer-sponsored health insurance plans and their young (two years old or less) children. It finds that health costs associated with pregnancy, childbirth, and post-partum care average a total of $20,416, including $2,743 in out-of-pocket expenses, for women enrolled in employer plans. In addition to the cost of pregnancy and birth, newborns, defined as children with fewer than three months of enrollment, had average total health care spending of $5,820, including $475 in out-of-pocket costs.

The analysis can be found on the Peterson-KFF Health System Tracker, an information hub dedicated to monitoring and assessing the performance of the U.S. health system.

Five Key Facts About People Experiencing Homelessness

Published: Sep 9, 2025

Editorial Note: This brief was updated on September 9, 2025 with additional information about people with HIV.

President Trump recently signed an executive order on homelessness, mental health, and substance use that leverages federal funding priorities and other administrative tools to encourage states to ban public drug use, remove unhoused people from public spaces, and broaden civil commitment laws to permit involuntary psychiatric civil commitments in more circumstances. The Trump administration also invoked the Home Rule Act to place D.C.’s police force under federal control and deployed the National Guard to clear homeless encampments in the city and address crime. These actions follow nationwide passage of court-backed state laws making it easier for law enforcement to ticket, fine, or arrest people sleeping on public property.

According to the U.S. Department of Housing and Urban Development (HUD), more than 770,000 people were experiencing homelessness on a single night in January 2024, the highest ever recorded. The links between homelessness and health are complex, and past KFF research found that people with prior experiences of homelessness have disproportionate physical and mental health needs and face greater socioeconomic challenges compared to those who have never experienced homelessness. People experiencing homelessness who are unsheltered also experience higher rates of chronic homelessness, chronic disease, mental illness, and substance abuse than those who are sheltered.

This data note reviews trends in homelessness and characteristics of people who are homeless using data from HUD’s Point-in-Time (PIT) count of sheltered and unsheltered people experiencing homelessness. The PIT count is generally conducted on a single night during the last ten days of January. These estimates may undercount the total number of people experiencing homelessness, particularly among the unsheltered.

1. From 2018-2024, the number of people experiencing homelessness on a single night increased nearly 40% to over 771,000 people, with nearly four in ten (36%) staying in unsheltered locations.

The HUD PIT survey counts people experiencing homelessness in both sheltered and unsheltered settings on a single night. People are counted as unsheltered if they sleep in locations not ordinarily used as a regular sleeping accommodation, such as cars, parks, abandoned buildings, or campgrounds. The remainder of people experiencing homelessness were in sheltered locations, with nearly six in ten (56%) staying in emergency shelters and nearly one in ten (9%) in transitional housing, which is temporary housing with supportive services (Figure 1). Between 2018 and 2024, the number of people experiencing homelessness rose by nearly 40%. This increase was primarily driven by the growth in the number of people staying in emergency shelters and experiencing unsheltered homelessness, while the number of people in transitional housing declined over the same period. Nearly half of the overall increase occurred between 2023 and 2024, during which the total number of people experiencing homelessness increased by 18%. According to HUD, rising housing costs and the end of the COVID-19 public health emergency in May 2023, which ended the eviction moratorium and other income and safety net programs, drove these recent increases.

Beyond shifts in sheltered and unsheltered homelessness, the number of people experiencing “chronic homelessness”—defined by HUD as long-term or repeated homelessness among people with a disability—increased 73% between 2018 and 2024 (from about 97,000 to 168,000). However, the number of adults experiencing homelessness who were veterans fell 13% from 2018 to 2024, making up 5% of the share of all adults experiencing homelessness in 2024, similar to their share of the general adult population (6%). An increase in housing assistance programs from the Department of Veterans Affairs (VA) in recent years likely drove this decrease.

From 2018-2024, The Number of People Experiencing Homelessness Increased Nearly 40%, With Nearly 40% Unsheltered in 2024 (Stacked column chart)

2. In 2024, over eight in ten (81%) people experiencing homelessness were adults, but the number of children experiencing homelessness grew at double the rate of adults.

On a single night in January 2024, there were over 623,000 adults and 148,000 children experiencing homelessness, with adults consistently representing about eight in ten of all people experiencing homelessness since 2018 (Figure 2). However, from 2023 to 2024, the number of children experiencing homelessness grew by 33% (from about 112,000 to 148,000), double the percentage increase among adults, which increased by 15% (from about 541,000 to 623,000). Most households with children experiencing homelessness are sheltered, as children made up less than one in ten unsheltered people in 2024. Housing insecurity during childhood is associated with negative health outcomes later in life, including anxiety and depression. Older adults also represented a growing share of the number of people experiencing homelessness, with the share of people experiencing homelessness ages 55 and older increasing by 6% from 2023 to 2024. Research found that this aging population of older adults has comprised a disproportionate share of single adults experiencing homelessness, which may drive future increases in the share of older adults experiencing homelessness.

While Eight in Ten People Experiencing Homelessness Are Adults, the Number of Children Experiencing Homelessness Grew More Rapidly from 2023-2024 (Stacked column chart)

3. In 2024, Southern and Western states had higher shares of people who were experiencing homelessness who were unsheltered compared to other parts of the country.

States in the Northeast and West had higher rates of people experiencing homelessness per 10,000 people than elsewhere in the country on a single night in January 2024 (Figure 3). The share of people experiencing homelessness who were unsheltered by state were highest in Southern and Western states, including in California (66%), Oregon (62%), Alabama (59%), and Florida (54%). In contrast, the shares of people who were experiencing homelessness who were unsheltered were lowest in New York (4%) and Vermont (5%), despite these states having relatively high rates of people experiencing homelessness per 10,000 people. These patterns may reflect a combination of local factors, including climate, housing costs, shelter capacity, right to shelter laws, and law enforcement that bring more people into emergency shelters.

In 2024, Shares of People Experiencing Homelessness Who Were Unsheltered Were Highest in Southern and Western States (Choropleth map)

4. In 2024, about seven in ten (68%) people experiencing homelessness were people of color.

White (32%), Hispanic (31%), and Black (30%) people each accounted for about three in ten of people experiencing homelessness on a single night in January 2024, with other racial and ethnic groups making up smaller shares (less than 5%) (Figure 4). Black, Hispanic, AIAN, and NHPI people made up a disproportionate share of the people experiencing homelessness compared to their share of the total population.

In 2024, About Seven in Ten People Experiencing Homelessness Were People of Color (Pie Chart)

5. In 2024, adults experiencing homelessness were more likely to have serious mental illness (SMI), substance use disorder (SUD), and HIV/AIDS than the general population.

In 2024, over two in ten (22%, or 140,000) adults experiencing homelessness on a single night in January met HUD’s SMI definition, compared to about 5-6% of adults overall according to the National Survey of Drug Use and Health (NSDUH) (Figure 5). A similar share (18%, or 113,000) of adults were identified as having a chronic substance use disorder (SUD) according to HUD’s definition in the point-in-time count, compared to about 3% of adults in the general population who met NSDUH criteria for severe SUD. These shares are also higher among adults experiencing unsheltered homelessness, with the share of those with chronic SUD increasing in recent years. SMI and SUD often co-occur—about one-quarter of people with SMI also has an SUD—but HUD’s publicly available data do not report the overlap of these conditions. About 2% (11,000) of adults experiencing homelessness had HIV/AIDS, compared to less than 1% of the general population living with HIV. In addition, 15% of people with HIV experienced housing instability in the past 12 months.

In 2024, 22% of Adults Experiencing Homelessness Had a Serious Mental Illness, 18% Had a Substance Use Disorder, and 2% Had HIV/AIDS (Stacked column chart)

How Do Health Care Prices and Utilization in the United States Compare to Peer Nations?

Authors: Delaney Tevis, Matt McGough, Juliette Cubanski, Matthew Rae, and Cynthia Cox
Published: Sep 4, 2025

This updated chart collection compares indicators of health care utilization and prices in the United States and 11 similarly wealthy countries to investigate whether higher prices or higher utilization of healthcare services drives the high health care expenditures in the U.S. relative to peer nations.

The U.S. spends nearly twice as much on health care per person as peer nations ($13,432 vs. $7,393 per person), meanwhile health care utilization in the U.S. — from doctor visits to surgeries — is generally lower than in other wealthy countries. The evidence continues to support the finding that higher prices – as opposed to higher utilization – explain the United States’ high health spending relative to other high-income countries.

The analysis is part of the Peterson-KFF Health System Tracker, an online information hub dedicated to monitoring and assessing the performance of the U.S. health system.

5 Key Facts about Medicaid’s Share of National Health Spending

Published: Sep 3, 2025

Medicaid, as the primary program providing comprehensive coverage of health care and long-term services and supports to about 80 million low-income people in the United States, accounts for one-fifth of all personal health care spending in the United States and a large share of state budgets. During its 60 years since enactment, Medicaid’s share of health insurance coverage and health care spending have incrementally increased; the program has evolved over time through a series of legislative and judicial actions, within the context of broader changes in the health care landscape. Now, landmark changes to Medicaid coverage and enrollment policies are set to roll out over the next several years.

According to the Congressional Budget Office (CBO), the recently enacted reconciliation package is estimated to reduce federal Medicaid spending by $911 billion over 10 years (after accounting for interactions that produce overlapping reductions across different provisions of the law), and to increase the number of uninsured people by 10 million in 2034. The most recent projections for national health spending do not account for the changes in the law; but changes in the law are expected to have big implications for Medicaid coverage and spending that could reverse longstanding incremental trends. Policy changes in the reconciliation package that lead to more uninsured people are likely to increase out-of-pocket spending as a share of national health care spending. Shifts in spending patterns are likely to be more profound over time and beyond the ten year projection period if there are no other changes in federal laws that affect health spending.

To provide historical context for how changes to Medicaid spending may impact national health spending trends, this brief explores how Medicaid spending contributes to national health spending and how different service areas contribute to Medicaid costs. This brief uses National Health Expenditures (NHE) historic data, published annually by the Centers for Medicare & Medicaid Services, which provide estimates of national spending on health care, by payer and by type of service. The analyses in this brief focus on spending for personal health care, which excludes the costs of public health programs and payers’ administrative spending (see Methods).

1. Over time, Medicaid has covered an increasing share of the population and health care costs.

Over the past two decades, the percent of the population enrolled in Medicaid increased by more than 10 percentage points (from 12% in 2000 to 25% in 2023 by NHE enrollment estimates). During the same time, Medicaid’s share of national health spending increased by only 3 percentage points, from 16% to 19%. Medicaid spending is driven by multiple factors, including the number and mix of enrollees, their use of health care and long-term services and supports, the prices of Medicaid services, and state policy choices about benefits, provider payment rates, and other program factors. Some of the faster growth in Medicaid enrollment relative to spending is that enrollment growth over the past two decades was driven by increased enrollment stemming from the Great Recession, implementation of the Affordable Care Act (ACA) Medicaid expansion, and the COVID-19 pandemic. Each of those events spurred increased enrollment of working-age adults and their families, groups that tend to have lower per-enrollee Medicaid costs than older adults and people who come into Medicaid because they need long-term care. CBO estimates predict that changes to Medicaid enacted in the reconciliation package will result in a downward shift in future Medicaid spending and in enrollment. KFF analyses show how these recent changes to Medicaid policy are likely to reduce federal Medicaid spending and impact enrollment, with varying impacts to different states or areas.

Medicaid Covers an Increasing Share of the Population and Health Care Costs

2. Medicaid’s share of spending has grown, but remains lower than that of private insurance and Medicare.

Prior KFF analysis has shown that generally, third party payers cover a greater share of total health spending than in previous decades because more people have gained coverage, especially public coverage, and payers’ spending per enrollee has grown. The total share of national health care spending for each type of coverage reflects the number and mix of enrollees and the amount spent to cover each enrollee. The share of health care spending paid by people out-of-pocket decreased as more spending was paid by Medicare and private insurance. Out-of-pocket spending includes payments for care from people who are not insured, and payments for care from people with health coverage when coverage requires enrollees to pay some of the costs. Common types of out-of-pocket spending among people with coverage include copayments (a flat fee per service), coinsurance (a percentage of the total costs), and deductibles (an amount enrollees pay before coverage kicks in). Historically, one difference between Medicaid and other forms of health coverage was the low out-of-pocket spending. Estimated increases in the uninsured following implementation of the reconciliation package could reverse incremental declines in out-of-pocket costs.

Medicaid’s Share of Spending Has Grown, but Remains Lower Than That of Private Insurance and Medicare (Line chart)

3. Over 70% of Medicaid spending pays for hospital services and long-term care.

Over the last 23 years, the largest share of Medicaid spending paid for hospital services, which accounted for 38% of Medicaid spending on average and varied between 37% and 39% during the 2000-2023 period. Medicaid mirrors broader hospital spending trends; spending on hospitals makes up the largest share of all health care spending, a trend projected to continue. During the same period, long-term care accounted for an average of 37% of Medicaid spending, although it declined somewhat from a high of 40% in 2007 to 36% in 2023. The category with the greatest relative growth was payments to providers such as physicians which increased from 11% in 2000 to 17% in 2023. The percent of spending that paid for prescription drugs decreased from 11% in 2000 to 7% in 2023, which is likely attributable to the enactment of the Medicare prescription drug benefit which took effect in 2006. Prior to that point, Medicaid paid for prescription drugs for low-income Medicare beneficiaries who were also enrolled in Medicaid (e.g., dual-eligible individuals).

Over 70% of Medicaid Spending Pays for Hospital Services and Long-Term Care

4. Medicaid pays for nearly 20% of hospital spending.

Medicaid pays for nearly 20% of hospital spending, a share that has changed little since 2000. During that time, Medicare’s share of national spending on hospital care decreased from 30% in 2000 to 25% in 2023, while the share paid by private health insurance rose from 33% to 37%. People pay a much smaller percentage of hospital spending out-of-pocket compared with other types of health care. Medicaid covered 41% of all U.S. births in 2023; births are the most common reason for a hospital inpatient stay. Medicaid financing for hospitals is complex, but Medicaid studies have shown that Affordable Care Act (ACA) Medicaid expansion is associated with improved hospital financial performance and lower likelihood of hospital closure, particularly in rural areas.

Medicaid Pays for Nearly 20% of Hospital Spending (Area Chart)

5. Medicaid is the primary payer of long-term care, most of which is now provided in people’s homes and the community.

Medicaid continues to be the primary payer of long-term care, comprising an increasing share of all spending on long-term care. Medicaid’s share of spending on long-term care rose nine percentage points, growing from 52% in 2000 to 61% in 2023. Since 2000, Medicaid’s spending on care delivered in people’s homes and communities (e.g., home care) increased faster than spending on institutional care such as nursing facilities. In 2000, the 52% of long-care spending that was paid by Medicaid included 29% on home care and 23% on institutional care. In 2023, the 61% that was paid by Medicaid included 47% on home care and only 14% on institutional care. Prior KFF analysis has shown that in 2021, three-quarters of the 5.7 million people who used Medicaid long-term care were receiving home care, although that percentage varies across the states widely. The larger share of people receiving care in the community as opposed to in an institution reflects initiatives to make home care more widely available in recent years and to remove what has been referred to as the “institutional bias” in Medicaid. 

Medicaid is the Primary Payer of Long-Term Care, Most of Which Is Now Provided in People’s Homes and the Community

Methods

This analysis uses National Health Expenditures (NHE) historic data. Unlike other sources of information on health care spending, the NHE data use an accounting structure that captures all expenditures of health care goods and services and investment in the health care sector. Expenditures are classified into high-level service categories and by source of payment. Data sources include federal administrative data, household and individual surveys, surveys of businesses, and economic data from the Bureau of Labor Statistics and the Bureau of Economic Analysis. Medicaid spending estimates are derived from financial reporting through Form CMS-64, except for durable medical equipment estimates which are developed from person-level payment data.

See the NHE Accounts Methodology documentation for additional information including definitions, sources, and methods; CMS publishes both complete documentation and short definitions.

Enrollment: This KFF analysis uses NHE Accounts enrollment data to estimate Medicaid’s share of total health insurance enrollment (Figure 1). NHE Accounts data estimates Medicaid enrollment using the Medicaid Statistical Information System (MSIS) for years 2000-2013, and enrollment projections reported on form CMS-64 for years 2014-2023. The NHE Accounts data estimates for total health insurance enrollment include private health insurance, Medicare, Medicaid, CHIP, and the Departments of Defense and of Veterans Affairs.

Personal Health Care Services: Personal health care services in the NHE Accounts data represent aggregate revenue received by health care providers and retail providers of medical goods and services. Cost estimates for personal health care services expenditures exclude administrative costs, government public health activities, or investments in structures or equipment. KFF analyzes NHE personal health care data using service categories (i.e. “hospitals,” “providers,” or “prescription drugs,”) that align with the classification system used within the NHEA, except for Long-Term Care.

Spending by Payer: NHE Accounts data estimate spending attributable to certain payer categories. KFF uses the payer categories defined by the NHE Accounts data and defines “Other” spending (Figures 2 and 4) below. For personal health care services:

  • Medicaid spending estimates include both state and federal spending on both fee-for-service and managed care enrollees but exclude Children’s Health Insurance Programs (CHIP) spending.
  • Medicare spending estimates include Medicare Parts A, B, and C (Medicare Advantage). Medicare spending estimates also include Medicare Part D and Medicare Advantage Part D. Private supplemental Medicare insurance, i.e. Medigap and employer-sponsored Medicare Part D, is excluded from Medicare spending and included in private insurance spending.
  • Private Insurance spending estimates include premiums and benefits from traditional fully-insured health coverage whether purchased individually or through an employer, self-insured employer health benefit plans, plans purchased through the Affordable Care Act marketplaces, and indemnity plans such as those covering hospital care or long-term care. Private insurance spending estimates also include supplemental Medicare plans (e.g., Medigap).
  • Out-of-Pocket spending estimates include direct consumer spending including coinsurance, deductibles, and any other amounts not covered by insurance. Premiums are included in private insurance spending and excluded from out-of-pocket spending.
  • Other: KFF defines “Other” spendingas personal health care expenditures by the Children’s Health Insurance Program, the Indian Health Services, the Substance Abuse and Mental Health Services Administration, the Veterans Health Administration, federal spending through the Pre-Existing Conditions Insurance Plans (PCIP) or COVID-19 relief funds (e.g. the Provider Relief Fund), direct payments to the needy through general assistance programs (e.g. the State Pharmaceutical Assistance Program), certain state and local programs (e.g. temporary disability insurance or provider subsidies), and property or casualty insurance.

Spending by Service Category: KFF uses the NHE Accounts definitions for hospital care, provider care, and prescription drugs. KFF definitions for “Other” services (Figure 3) and “Long-Term Care (Figures 3 and 5) are included below.

  • Hospital Care includes all services provided by hospitals to patients. These expenditures include the services of resident physicians, inpatient pharmacy, room and board and ancillary costs, hospital-based home health care, and other services billed by hospitals. Services rendered in a hospital by a physician who bills independently are considered Provider Care.
  • Provider Care includes services provided in non-hospital clinics and practices. These include physician-operated practices, outpatient care centers, and certain federally operated clinics and clinics operated by non-physician clinicians (such as private-duty nurses, podiatrists, optometrists, chiropractors, or occupational therapists). Provider care also includes certain medical laboratory services.
  • Prescription Drugs covers “retail” sales of products available only by a prescription, such as drugs, biologics, and diagnostic products.
  • Other: KFF defines Medicaid spending on “Other” services to include personal health care expenditures not attributable to hospitals, providers, prescription drugs, nor long-term care. This includes dental care, durable medical equipment, non-durable medical equipment (e.g. diagnostic tools or wound dressings and other medical supplies), and non-prescription drugs.
  • Long-Term Care: KFF defines long-term care to include spending for nursing care and continuing care retirement communities; home health; and other health, residential, and personal care if it is paid for by Medicaid, individuals who are paying out-of-pocket, the Children’s Health Insurance Program, the Indian Health Services, the Substance Abuse and Mental Health Services Administration, the Veterans Health Administration, general assistance, other federal programs, other state and local programs, school health. See 10 Things about LTSS for more information.

VOLUME 29

Better Prompting May Help Reduce AI Hallucinations, False Vaccine Claims Spread, and Industrial Solvent Promoted as Hidden Cancer Cure


Summary

This volume highlights new research showing that certain prompting techniques can help reduce the risk of AI chatbots amplifying false medical information when users include fabricated terms in their queries. It also examines false claims linking vaccines to sudden infant death syndrome and the promotion of the industrial solvent dimethyl sulfoxide as an allegedly suppressed cancer cure despite a lack of clinical evidence. Lastly, it explores misunderstandings among first responders about the risks of overdose from fentanyl exposure and ongoing myths about sunscreen safety.


The Problem Isn’t Trust in Vaccines, It’s That People Don’t Know Who to Trust

In last week’s “Beyond the Data” column, KFF’s CEO, Dr. Drew Altman, draws on years of KFF polling about vaccines and writes that uncertainty about vaccines stems not from lack of confidence in their safety but from eroding trust in sources of health information, leaving many unsure where to turn for reliable guidance. As Altman notes in the column, just 16% of the public believe mRNA vaccines are unsafe, but only 14% of the public say they have a lot of trust in federal health agencies like the Centers for Disease Control and Prevention (CDC) and Food and Drug Administration (FDA) to ensure the safety and effectiveness of vaccines. The result: the majority of Americans are uncertain and unsure what to believe.


AI & Emerging Technology

Chatbots Prone to Hallucinations When Prompted with Fabricated Terms

KFF / Getty Images

Artificial intelligence (AI) chatbots can convincingly amplify false claims when false medical information is embedded within user questions, according to new research published in Communications Medicine. The study, conducted by researchers at Mount Sinai Medical Center, tested how leading large language models (LLMs) respond when fictional medical terms are included in patient scenarios. The researchers created 300 hypothetical cases containing fabricated diseases, symptoms, or medical tests to evaluate whether chatbots would identify and reject the false information. 

Without additional safety prompts, the AI responses regularly contained hallucinations, a phenomenon that occurs when an LLM fabricates false information instead of relying on evidence. In 65.9% of responses, the chatbot expanded on the fictional medical details, generating confident explanations about treatments for non-existent conditions like “Faulkenstein Syndrome.” Researchers suggested that users may unknowingly include false information in their health queries to AI chatbots, from unreliable sources or misremembered medical terms, and may receive responses that not only repeat but expand upon those inaccuracies.

The study also demonstrated, however, that including additional safeguards in the prompt could reduce this risk. By asking the AI models to use only clinically validated information and acknowledge uncertainty, the rate of hallucinations dropped to 43.1%. The researchers suggested that additional safeguards built into AI models, or included in user prompts, help mitigate the risks of chatbots amplifying false health information. The findings demonstrate the need for further education about AI, including around proper prompting techniques. An August 2024 KFF poll found that most adults (56%) were not confident in their ability to tell the difference between what is true and false when it comes to information from AI chatbots. Users may benefit by developing new prompting strategies, particularly when using AI for health information where falsehoods can cause particular harm. Framing prompts with accurate, verified details, or including safeguards in the prompts, could help prevent chatbots from repeating false information, enhancing their reliability and usefulness.


Recent Developments

False Claims Link Vaccines to Sudden Infant Death Syndrome

Karl Tapales / Getty Images

Widely-shared social media posts in early August repeated unsubstantiated claims that routine childhood immunizations are associated with sudden infant death syndrome (SIDS). The claims circulated online this summer following the publication of a review, authored by a researcher who has previously published studies claiming that vaccines are unsafe, that alleged without evidence that vaccines cause SIDS. One X user, with nearly 800,000 followers, falsely alleged that children who died of SIDS were killed by the vaccine industry. Another account, with more than 100,000 followers, called for a ten-year ban on all vaccines, implying that such a ban would lead to “a society without SIDS” and other illnesses like cancer and autism.

Claims of an association between childhood vaccinations and SIDS have persisted for decades, largely citing the temporal association between the recommended vaccination schedule and incidence of SIDS. Cases of SIDS peak around 2-4 months of age, coinciding with the timing of recommended early childhood vaccines. Multiple large-scale studies, though, have found no causal link between childhood vaccines and SIDS. Research has identified multiple factors that may contribute to SIDS risk, including sleep position, maternal smoking, and premature birth, but vaccination is not among them. Rates of SIDS sharply declined after the American Academy of Pediatrics (AAP) introduced safe sleep guidelines for infants, then stabilized in the 2000s during the same timeframe that the childhood vaccination schedule expanded. Some studies have found that vaccinations may in fact be associated with a lower risk of SIDS. 

Polling Insights: Recent KFF polling has found that notable shares of parents are coming across vaccine-related content on social media. In KFF’s July Tracking Poll on Health Information and Trust four in ten parents (41%) reported seeing information about vaccines on social media in the past 30 days. Previous KFF polling has found that about a third of parents (36%) say they are “not too confident” or “not at all confident” that they can tell what is true versus what is false when it comes to information on social media.

As parents are exposed to vaccine information online, the July Tracking Poll also found that many express distrust in the CDC and in local public health departments when it comes to providing reliable information about vaccines. Overall, four in ten parents say they trust the CDC “not much” or “not at all” to provide reliable information about vaccines and a similar share (38%) express distrust towards their local public health department.

Bar chart showing confidence in federal health agencies on a variety of tasks

Dimethyl Sulfoxide, An Industrial Solvent, Promoted as Suppressed Cancer Cure

Irfan Setiawan / Getty Images

Some influential X accounts with large followings have promoted dimethyl sulfoxide (DMSO), an industrial solvent and byproduct of paper production, as a “miracle cure” for a range of health issues, often portraying past regulatory restrictions on the substance as evidence of a deliberate suppression of an effective treatment. Social media posts in late July and early August have claimed that the solvent can treat conditions including blindness, tinnitus, skin issues, and cancer. One X account, with more than 1.8 million followers, described a combination of DMSO and the histologic stain hematoxylin as “The 50-Year-Old Cancer Miracle Hiding in Plain Sight” and said that the FDA “chose to bury the evidence.” Other accounts also presented unsupported claims about DMSO as a cancer cure as evidence of a conspiracy, including one with more than 300,000 followers who claimed that the FDA banned the substance despite knowing that it “cured cancer” and “made chemo more likely to work.”

DMSO, which penetrates the skin quickly and is used in some transdermal drug delivery systems, was tested in the 1960s as a pain reliever, but trials were halted after research showed abnormal changes in the eyes of laboratory animals. Research has since continued into DMSO’s potential for pain relief, including for pain from osteoarthritis, but has yielded inconsistent results. The FDA has approved DMSO for treating symptoms of interstitial cystitis, which remains the only FDA-approved use of the substance. While its effectiveness in treating cancer has also been investigated, claims that it is a “cure” overstate the available evidence. Some research in laboratory settings has shown that it may have anti-cancer properties, but other studies have found it may increase the rate at which cancer cells multiply, and no large-scale clinical trials have demonstrated its effectiveness for treating cancer in humans. DMSO has also been shown in some research to adversely interact with effective cancer treatments, including platinum-based chemotherapy drugs like cisplatin, carboplatin, and oxaliplatin.

It has nonetheless been promoted by alternative medicine advocates for decades, and some science communicators have theorized that the FDA’s effective ban of the chemical may have contributed to advocacy for its use. The substance’s promotion as a cancer cure, despite a lack of evidence, may cause patients to delay treatment, which is known to lead to higher mortality rates. Its popularity mirrors unsupported claims about ivermectin’s ability to treat cancer and demonstrates the potential for unproven and potentially harmful treatments to gain attention as trust in health authorities declines.

Police Video Highlights Ongoing Misunderstandings About Fentanyl Overdose Risk

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Widespread misunderstandings about brief skin contact with fentanyl continue to shape public perception and emergency protocols, despite a decline in opioid deaths that began in mid-2023 and continued through 2024.In early August, a video of a police officer collapsing after handling evidence during an arrest was widely shared on social media, contributing to discussion about the risk of fentanyl exposure among law enforcement. According to the local sheriff’s office, the officer handled a dollar bill containing fentanyl without gloves and was administered naloxone and transported to a local hospital. The sheriff’s description has not confirmed fentanyl as the cause, but it has reinforced misconceptions about the drug, with some commenters falsely suggesting that brief skin contact with fentanyl could cause an overdose. A former narcotics officer repeated the claim on cable television, saying that merely touching fentanyl “could kill someone.” Others, though, including an X user who identified himself as a medical doctor, stated that physical absorption of fentanyl through such brief contact was not possible.

The misunderstanding that brief skin contact with fentanyl can cause an overdose can be traced to a 2016 Drug Enforcement Administration (DEA) video that warned law enforcement officers that such contact could be fatal. Fentanyl can be absorbed through the skin, but a joint statement from the American College of Medical Toxicology (ACMT) and the American Academy of Clinical Toxicology (AACT) clarified that small, unintentional skin exposures to fentanyl powder or tablets are “very unlikely” to cause significant opioid toxicity. According to the statement, it would take 14 minutes with both hands covered with high-absorption fentanyl patches to receive a therapeutic dose. Risk may be greater for workers in certain high-risk situations, like a drug storage or distribution facility where the potential for longer duration exposure is higher, and the National Institute for Occupational Safety and Health (NIOSH) has recommended higher levels of personal protective equipment (PPE) when larger quantities may be encountered. 

Studies have found no confirmed cases of fatal overdoses among first responders due to contact with the drug, and there have been no documented cases of harm from incidental exposure. Still, the perceived risk among first responders remains high, and misunderstandings about the potential of accidental overdose have shaped emergency response protocols. These concerns may result from conflating brief contact during routine emergency calls with prolonged, high-concentration exposures which carry higher risks. A KFF Health News article reported that these misconceptions may have contributed to some first responders being warned to proceed with caution when responding to an overdose. This has prompted concern among some public health advocates that misunderstandings of risk could lead to delayed interventions such as CPR and rescue breaths, techniques that are recommended by the Substance Abuse and Mental Health Services Administration (SAMHSA) as essential steps in responding to opioid overdoses. 

Sunscreen Claims Persist as UV Protection Remains Important

ljubaphoto / Getty Images

Misleading claims that sunscreen is ineffective or toxic have circulated on social media through late summer, with some influencers promoting the idea that chemical sunscreens cause more harm than sun exposure itself. One post, from an account with more than 1.1 million followers, claimed that an increase in melanoma rates was associated with the “toxic chemicals” found in commercially available sunscreen. Others promoted alternative sun protectants, like beef tallow, and claimed that vitamin D from sun exposure helped reduce cancer risk. 

Claims that ingredients in sunscreen are toxic may have originated with a 2020 study that found some chemical ingredients, including oxybenzone and avobenzone, were systematically absorbed by the body in concentrations that exceed the FDA’s limit for requiring further safety testing. The FDA has requested further safety data on these chemicals, but the agency has noted that the fact that an ingredient is absorbed does not mean it is unsafe, nor does its request for additional information. There has been no conclusive evidence that these chemicals are harmful, and dermatologists have noted that they have been safely used for decades. The FDA continues to recommend the use of sunscreen, along with other sun-protective measures, like limiting time in the sun. Some posts also referenced recent recalls of sunscreen products containing benzene, a known carcinogen, incorrectly associating it with oxybenzone and avobenzone. Melanoma diagnosis rates have risen alongside increased use of sunscreen, but this trend also coincided with greater public awareness and improved diagnostic tools. Exposure to ultraviolet (UV) radiation from sun exposure is a known risk factor for developing skin cancers like melanoma, and trials have shown that regular use of sunscreen significantly reduces this risk. There is no evidence that vitamin D reduces the risk of skin cancers, and evidence shows that regular sunscreen use does not cause vitamin D deficiency.

Ongoing myths about supposed harms of sunscreen may lead some to discontinue use, resulting in higher rates of the most common and preventable forms of cancer. UV rays remain a year-round concern, as fall and winter months can still present significant UV exposure. Damage from sun exposure is cumulative, and contributes both to skin cancer risk and accelerated aging. The FDA recommends use of broad spectrum sunscreens with SPF values of 15 or higher. 

About The Health Information and Trust Initiative: the Health Information and Trust Initiative is a KFF program aimed at tracking health misinformation in the U.S., analyzing its impact on the American people, and mobilizing media to address the problem. Our goal is to be of service to everyone working on health misinformation, strengthen efforts to counter misinformation, and build trust. 


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Support for the Health Information and Trust initiative is provided by the Robert Wood Johnson Foundation (RWJF). The views expressed do not necessarily reflect the views of RWJF and KFF maintains full editorial control over all of its policy analysis, polling, and journalism activities. The data shared in the Monitor is sourced through media monitoring research conducted by KFF.