Picture two charts side by side. The first shows preventive care utilization for children: 86% of infants, 84% of five-year-olds, 60% of teenagers. Regular checkups, vaccinations, screenings—pediatric prevention is deeply embedded in how we raise children in this country.

Now look at the second chart. When adulthood begins, the numbers fall off a cliff. Among men aged 18 to 24, preventive care utilization drops to 18%. For men 25 to 39, it’s 21%. Even among women in the same age groups—who consistently outpace men in preventive engagement—the rates are 41% and 47% respectively. Many carriers report annual wellness visit rates in the low to mid 30% for the adult population overall.

For employers, these numbers should be alarming. Of the roughly 206 million working-age adults in the U.S., approximately 155 million receive health insurance through their employer. These are not just plan members—they are the workforce, and they represent some of the highest-cost groups in any employer’s medical plan. When 60% to 80% of them aren’t engaging in preventive care, the consequences show up in medical claims, chronic disease progression, emergency room utilization, and ultimately, in the benefits budget.

The Cliff That Nobody Talks About

The preventive care utilization data by age and gender tells a story that should fundamentally reshape how employers think about their health benefits. Children receive preventive care at rates of 84–86% because pediatric medicine has built systems designed around prevention: regular well-child visits are expected, tracked, and culturally normalized. Parents schedule them. Doctors remind them. Schools require them.

Then adulthood arrives, and all of those structural supports vanish. There are no school-mandated physicals for a 25-year-old software engineer. No pediatrician calling to remind a 32-year-old account manager that they’re overdue for a wellness visit. The system shifts from proactive prevention to reactive sick care—and the utilization data reflects it immediately.

The gender gap in this data is particularly striking. Among adults 25 to 39, women engage in preventive care at 47% while men are at 21%. The gap narrows with age but never closes. By ages 55 to 64, women are at 52% and men at 37%. This means that the male half of your workforce is especially underserved by the current approach to prevention, and the conditions that go undetected in those missing visits—hypertension, pre-diabetes, elevated cholesterol—don’t wait patiently. They progress.

Making It Free Didn’t Make It Happen

When the Affordable Care Act passed in 2010, requiring medical plans to cover preventive care at 100%, the expectation was reasonable: remove the cost barrier and people will get their screenings, their wellness visits, their immunizations. More than a decade later, the data shows that benefit design alone has not moved the needle enough.

Adult wellness visit rates remain in the low to mid 30%. The utilization cliff at age 18 persists. And there’s evidence that high-deductible health plans may actually be making things worse—research published in Translational Behavioral Medicine found that adults in HDHPs with higher deductibles reduce their rates of primary care and preventive services. Even though preventive care is technically exempt from the deductible, the overall cost-avoidance behavior that HDHPs encourage appears to suppress preventive engagement as well.

This is a critical insight for benefits leaders. You can design a plan that covers prevention at 100%, and the majority of your adult workforce will still not show up. The barrier isn’t cost—it’s the structure of how primary care is delivered, the absence of proactive outreach, and the cultural norm among adults that says you only see a doctor when something is wrong.

80% Don’t Know What They Don’t Know

The consequences of this prevention gap are not abstract. At EHE Health, where the focus is on delivering comprehensive, evidence-based preventive care, as many as 80% of patients seen are unaware they are hypertensive, pre-diabetic, diabetic, or have high cholesterol. These are not rare conditions. They are the leading drivers of chronic disease, healthcare cost escalation, and preventable mortality in working-age adults.

Consider what that 80% figure means for an employer with 10,000 employees. If wellness visit rates are in the 30% range, roughly 7,000 employees aren’t getting a preventive exam in any given year. Among those who do show up, a substantial majority have conditions they didn’t know about. Among those who don’t show up, the same conditions are present—and progressing—undetected.

These are the employees who will eventually present with a cardiovascular event, a diabetes complication, or a late-stage cancer diagnosis. By that point, the costs are measured in tens or hundreds of thousands of dollars per episode. The preventive visit that could have caught these conditions early might cost a few hundred dollars. The math is not complicated. What’s complicated is getting people through the door.

[GRAPHIC: “The Hidden Risk in Your Workforce”—visual showing a workforce of 10,000. 7,000 not getting preventive care. Of the 3,000 who do, 80% have undetected conditions. The visual should make clear that the unscreened majority represents a much larger pool of unmanaged risk. Use EHE’s 80% stat prominently.]

The Spending Gap That Explains the Outcome Gap

The U.S. spends approximately 5% of total healthcare dollars on primary care. Other OECD nations spend as much as 14%. For working-age adults—the employer-insured population—primary care spending drops to roughly 4%. We are, by any measure, dramatically underinvesting in the part of the healthcare system that has the greatest potential to keep people healthy and costs down.

This spending gap has been directly linked to poor health outcomes, including lower average age at death compared to peer nations. And within the U.S., the age-stratified primary care spending data tells an even sharper story. Primary care spending as a share of total healthcare spend is 16% for children under five, drops to 7.5% by age 15–17, and falls to just 3.5–4.0% for the entire working-age adult population. The steepest decline happens exactly when the preventive utilization cliff begins.

For employers, this underinvestment isn’t an abstract policy problem. It shows up in their claims data. The chronic conditions that go undetected because of insufficient preventive care become the high-cost claims, the emergency room visits, the inpatient admissions, and the specialty referrals that drive medical trend. Employers are paying the downstream costs of a primary care system that doesn’t invest enough in keeping people healthy upstream.

What This Means for Your Benefits Strategy

The adult prevention gap is not a problem that better plan design will solve on its own. Covering preventive care at 100% was necessary, but it has proven insufficient. The structural factors—a primary care system biased toward sick care, the absence of proactive outreach, cultural norms that treat doctor visits as reactive rather than preventive—require a different kind of intervention.

Employers who are serious about closing this gap are investing in dedicated preventive care programs that operate outside the constraints of the traditional primary care model. Programs that don’t wait for the employee to call and schedule. Programs that deliver comprehensive, evidence-based prevention in a single, coordinated experience. Programs that treat prevention not as an afterthought to sick care, but as the foundation of primary care.

The data is clear: the majority of your workforce isn’t getting preventive care, many of those who do have conditions they don’t know about, and the primary care system as currently structured cannot close this gap. The question for benefits leaders is whether to accept those facts or to invest in an approach designed to change them.

For a deeper look at the data and the case for dedicated preventive care, download the full white paper: Prevention Is Where Primary Care Should Start.