The previous parts of this series have examined the cost of the current system, the evidence against the major objections, and the international record of universal healthcare. This part turns to the affirmative case: what Americans would concretely gain under single-payer, in human terms beyond the economic argument.
The gains are not abstract. They fall into several distinct categories: coverage for the tens of millions currently without meaningful access, the preventive care and early detection that cost barriers currently suppress, expanded mental health and addiction treatment, dental and vision coverage, rural healthcare stabilization, improved chronic disease management, and the elimination of the financial anxiety that functions as a background condition of American life. Each is examined in turn.
85 Million People With Nowhere to Turn
Eighty-five million Americans are currently either uninsured or underinsured. The uninsured number — approximately 25 to 30 million — receives more attention, but underinsurance may be the larger and less visible problem.
Underinsurance describes the condition of people who technically have coverage but face cost-sharing requirements so high that the coverage is functionally inaccessible. A family with a $6,000 deductible before insurance pays anything meaningful has a health insurance card. They do not have healthcare. When a child gets sick or a parent needs a specialist, the first several thousand dollars come out of pocket — out of a budget that may not have several thousand dollars available. The result is the same as being uninsured: care is deferred, skipped, or rationed.
Under Medicare for All, both groups receive the same comprehensive coverage as everyone else, automatically, with no cost at point of service. The underinsurance problem does not improve — it disappears, because the concept of cost barriers to covered care is eliminated entirely.
An additional 15 million Americans are projected to lose health insurance over the next decade as a result of Medicaid cuts in recent federal legislation, according to the Congressional Budget Office. The pool of Americans without meaningful access is not stable. It is growing.
Preventive Care: The Care That Never Happens
Cost barriers do not only prevent people from treating illness. They prevent people from catching it early.
A Madaket Health survey published in May 2025 found that 47% of Americans have delayed or skipped healthcare because of cost. Among Millennials the figure is 78%. Nearly half of insured adults have delayed care for cost reasons. These are people with coverage — coverage they cannot afford to use.
The consequences are well-documented. In oncology, delays of even one to three weeks in beginning guideline-recommended treatment correlate with worse disease control and lower survival, according to Johns Hopkins Medicine research published in 2025. Cancer caught at Stage 1 is dramatically more survivable and dramatically less expensive to treat than cancer caught at Stage 3 or 4. The deductible that prevented a patient from getting a mammogram or a colonoscopy is not just a financial barrier. It is a clinical outcome.
Under single-payer with no cost-sharing at point of service, the financial calculation that currently causes people to skip preventive appointments disappears. People go to the doctor before they are sick. Conditions are caught early. The downstream savings in avoided acute care are substantial; so is the downstream human benefit in lives extended and suffering prevented.
Mental Health and Addiction: The Coverage Gap
Mental health and substance use disorder treatment represent one of the most significant and least discussed coverage failures of the current system.
Mental health parity — the legal requirement that insurers cover mental health services on equivalent terms to physical health services — is frequently violated in practice. Coverage for mental health care is technically required and practically inaccessible in much of the country, due to a shortage of in-network providers, high out-of-pocket costs for out-of-network care, and prior authorization requirements that delay or deny treatment.
The consequences extend far beyond individual patients. Untreated mental illness and addiction are primary drivers of homelessness, incarceration, lost productivity, family instability, and emergency room utilization. The social cost of inadequate mental health coverage is distributed across every system that picks up the consequences: the criminal justice system, the emergency medical system, the social services system, the housing system. Single-payer does not pay for mental health coverage. It shifts costs that are already being paid — dispersed across dozens of systems — into direct healthcare coverage where they belong.
The Sanders bill covers mental health and substance abuse treatment comprehensively, with no cost-sharing. This is not a marginal improvement over the current system. It is a structural change in how the country addresses conditions that currently go undertreated at enormous aggregate cost.
Dental and Vision: Healthcare Treated as Luxury
Dental and vision coverage is one of the areas where the gap between American healthcare and what other countries provide is most immediately tangible for most people.
Current Medicare does not cover routine dental or vision care. Most employer plans cover them partially or not at all. Americans pay out of pocket for the majority of dental care — over $150 billion annually — and significant portions of vision care. For lower-income Americans and those without employer coverage, dental and vision care are frequently deferred indefinitely.
The health consequences are not cosmetic. Untreated dental disease is associated with cardiovascular disease, diabetes complications, adverse pregnancy outcomes, and sepsis. The connection between oral health and systemic health is well-documented in the medical literature. Untreated vision problems affect educational outcomes, workforce participation, and quality of life for working-age adults in ways that have measurable economic consequences.
The Sanders bill covers dental, vision, and hearing — items that most comparable countries include in their standard healthcare coverage because they are healthcare. Their classification as supplemental or optional in the American system reflects the structure of the insurance market rather than any medical logic.
Rural Healthcare: A System Closing Its Doors
Rural hospital closures are accelerating. Dozens of rural hospitals have closed in recent years; hundreds more are operating under financial stress that makes closure a near-term possibility. The cause is straightforward: rural populations have disproportionately high rates of uninsurance and Medicaid enrollment, both of which reimburse hospitals at rates below the cost of care. When a significant share of your patients cannot pay and the government payment for insured patients falls below cost, the math does not work.
Single-payer changes the rural hospital’s financial reality fundamentally. Every patient who walks through the door has coverage. The payment rate is set by the government and is uniform. The financial uncertainty that drives rural hospital closures — the uncompensated care, the Medicaid shortfalls — is eliminated. Hospitals that are currently closing because they cannot survive on the patient mix in their community would survive in a single-payer environment because the patient mix would no longer determine financial viability.
This is an argument that resonates differently in rural and small-town America than most healthcare policy arguments do. Rural communities are losing their hospitals right now, in real time. Single-payer is the most direct structural solution to that loss that has been proposed.
Chronic Disease: The Management That Doesn’t Happen
The United States has among the highest rates of preventable chronic disease in the developed world — diabetes, hypertension, heart disease, obesity-related conditions. A significant driver is deferred care. People who cannot afford regular physician visits do not manage chronic conditions. They manage acute crises.
Unmanaged diabetes leads to kidney failure, blindness, amputations, and cardiovascular disease — all of which are dramatically more expensive to treat than the regular physician visits and medication management that would have prevented them. Unmanaged hypertension leads to stroke and heart attack. Every dollar not spent on preventive chronic disease management generates several dollars in acute care costs downstream, plus the human cost of avoidable disability and death.
Under single-payer with no cost barriers at point of service, patients with chronic conditions receive ongoing management care. The evidence from international systems is consistent: chronic disease outcomes improve, hospitalizations decrease, and the long-term health of the population measurably improves when cost barriers are removed.
Coverage Gaps: The Moments the System Fails Most Visibly
There are specific life transitions when the cruelty of the current coverage architecture is most acutely felt.
Job loss is the most common. Employer coverage ends with employment. COBRA — the mechanism that allows continuation of employer coverage after job loss — costs an average of approximately $2,200 per month for family coverage. Most families in the financial stress of job loss cannot sustain that cost. They go without coverage during the period when financial stress is highest and the psychological burden of the transition is greatest.
Divorce produces the same vulnerability. A spouse whose coverage was through the other’s employer plan loses that coverage when the marriage ends. The COBRA cost arrives simultaneously with legal fees, housing changes, and the other financial dislocations of divorce.
Aging off a parent’s plan at 26 produces coverage uncertainty precisely when young adults are most likely to be between jobs, starting careers, or building toward financial stability. The individual market alternatives are expensive; many young adults go uninsured or underinsured during years when they may most need affordable healthcare access to take career risks.
Starting a business is the transition with the largest aggregate economic consequence. The single largest financial barrier to entrepreneurship in America is health insurance. A family giving up employer coverage to start a company faces individual market premiums that can exceed $1,500 per month — a cost that eliminates the financial runway many potential entrepreneurs need. The company that would have been started, the innovation that would have happened, and the jobs that would have been created are not counted in any healthcare cost analysis. They are simply absent.
Under single-payer, coverage is continuous and automatic regardless of employment status, marital status, age, or any other life circumstance. Healthcare is removed as a variable from every major life decision.
Job Lock: The Freedom Argument
Job lock — the inability to leave employment because doing so means losing healthcare — reduces voluntary job turnover by an estimated 25%, according to research on the relationship between employer-sponsored insurance and labor mobility.
The economic consequences are significant: misallocated labor, suppressed wage negotiation, reduced workforce flexibility. The human consequences are harder to quantify but real. The person who stays in a job that has become harmful to their wellbeing because their child has a pre-existing condition and they cannot risk the loss of coverage. The employee who does not negotiate aggressively for a raise because they fear retaliation and the loss of benefits. The worker who absorbs management that would otherwise be grounds for departure because the cost of departure, measured in healthcare terms, is too high.
These are not hypothetical situations. They are the predictable outcomes of a system that ties access to basic medical care to continued employment with a specific employer. Single-payer severs that tie entirely and permanently.
The job lock argument is structurally a freedom argument — one that should appeal across ideological lines. The current system constrains individual economic freedom through healthcare dependency in ways that a universal system eliminates. Whether that constraint is experienced as a reason to support single-payer is a values question. That the constraint exists and is significant is a factual one.
The Anxiety Argument
There is a form of cost imposed by the current system that does not appear in any expenditure table: the chronic low-level anxiety of living one medical event away from financial catastrophe.
Two-thirds of Americans report being very or somewhat worried about being unable to afford unexpected medical bills — despite the majority having insurance. The knowledge that a cancer diagnosis, a car accident, or a serious illness could produce bills in the tens or hundreds of thousands of dollars despite coverage — through surprise billing, out-of-network charges, coverage denials, or simple exhaustion of benefits — is a background condition of American life that residents of other wealthy countries do not experience.
This anxiety affects decision-making, risk tolerance, relationship stability, and quality of life in ways that are difficult to measure but are consistently reported in survey research. It is a form of chronic stress imposed by systemic uncertainty. No other wealthy country imposes this particular burden on its citizens, because no other wealthy country has designed a system in which a medical event can produce financial ruin despite insurance coverage.
Single-payer eliminates this scenario not by making healthcare better in every technical dimension — though the outcomes data suggests it would — but by removing the financial catastrophe possibility from the range of outcomes that healthcare can produce. That is a form of security that Americans currently pay more for than anyone else on earth to not have.
Sources
Madaket Health: Consumer healthcare survey, care delays due to cost, May 2025.
Johns Hopkins Medicine: Cancer treatment delay and outcomes, 2025.
KFF: Rural hospital financial stress and closure data.
Congressional Budget Office: Medicaid coverage loss projections, federal legislation 2025.
SAMHSA: Mental health and substance abuse treatment access data.
American Dental Association: Oral health and systemic disease research.
KFF / Peterson Health System Tracker: Surprise billing, out-of-pocket costs, consumer financial worry data.
Madrian, B.: Employment-Based Health Insurance and Job Mobility: Is There Evidence of Job-Lock? Quarterly Journal of Economics, 1994. Subsequent job lock literature.
KFF: COBRA cost data, 2025.
CFPB: Medical debt data, consumer financial burden.
Sanders Medicare for All Act of 2025: Coverage provisions, dental, vision, hearing, mental health.
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