The National Firefighter Registry: Why You Should Enroll

You already know the numbers. Firefighting was classified as a Group 1 carcinogen — the highest category, same shelf as asbestos and tobacco — by the International Agency for Research on Cancer in 2022. The landmark NIOSH study that drives most of what we know found firefighters had a 9% higher rate of cancer diagnoses and a 14% higher rate of cancer deaths than the general population. Cancer is the defining occupational disease of the modern fire service.

Here’s what you may not know: the biggest effort ever built to actually fix the data problem behind all of this is quietly hitting milestones — and it only works if people like you sign up. In early 2026, the CDC announced that the National Firefighter Registry for Cancer had passed 40,000 enrolled firefighters, making it the largest firefighter cohort in the nation dedicated to understanding occupational cancer risk. This year, NIOSH researchers also published the first detailed profile of who joined during the registry’s first three years, in the American Journal of Industrial Medicine. Consider this your nudge.

What the National Firefighter Registry Actually Is

The National Firefighter Registry (NFR) for Cancer is a voluntary research registry run by NIOSH, the federal occupational health institute. It launched in April 2023 with a simple premise: collect detailed fire service history — years on the job, roles, exposure patterns — from as many firefighters as possible, then link those records to state cancer registries over time. When cancer shows up, researchers can connect it back to what you actually did on the job, not a rough guess.

That matters because the old data has real blind spots. The classic NIOSH cohort — roughly 30,000 career firefighters from Chicago, Philadelphia, and San Francisco, employed between 1950 and 2009 — was groundbreaking, but it was three big-city career departments, overwhelmingly male, fighting fires in an era before modern synthetics filled every room with a different chemical soup. If you’re a volunteer, a woman, a wildland firefighter, an instructor, or a career firefighter anywhere outside a major metro, the foundational research barely saw you.

The NFR was designed to close those gaps. Enrollment is open to active, former, and retired firefighters; career, paid-on-call, and volunteer; structural, wildland, industrial, and military; plus instructors and investigators — with or without a cancer diagnosis. The healthy people matter as much as the sick ones. That’s the comparison group.

What the First Three Years of Enrollment Show

The 2026 paper in the American Journal of Industrial Medicine characterizes everyone who enrolled from January 2023 through December 2025 — the registry’s first three years. Alongside the CDC’s public NFR Data Dashboard, which tracks enrollment by state and job title and the most common self-reported cancer types, a picture is emerging of who is showing up and who isn’t.

The honest takeaway: 40,000-plus is a strong start, but it’s a fraction of the more than one million firefighters in the United States, and recruitment of the historically under-studied groups is exactly where the registry needs help. Every under-represented group in the registry becomes an under-represented group in the next decade of findings — and in every benefit decision built on those findings.

This Is About Your Benefits, Not Just Science

If registry data feels abstract, look at how presumption fights actually go. When a firefighter files a cancer claim, the question is whether that cancer is on the state’s presumptive list — and those lists were built from studies of the fire service the research actually captured. We’ve covered what happens when it wasn’t: female firefighters fighting for breast cancer coverage that isn’t on their state’s list, volunteers with decades of exposure and no cohort data behind them.

Presumption laws, screening guidelines, gear standards, and decon policy all move when the evidence moves. The registry is how the evidence moves. A robust NFR cohort that includes women, volunteers, and wildland crews is the raw material for the next generation of presumptive coverage — including for the firefighters who come after you.

How to Enroll (It Takes About 30 Minutes)

There’s no cost, no blood draw, and no ongoing homework. Here’s the process:

1. Go to nfr.cdc.gov. The CDC says getting started takes about 5 minutes; the full registration questionnaire takes about 30.
2. Answer the fire service history questions. Years of service, roles, types of incidents, exposure and decon habits. Be as accurate as you can — this is the data that does the work.
3. You’re done. NIOSH links enrollments with state cancer registry records over time, so you don’t need to report back if you stay healthy — and your information is collected through a secure federal research system.
4. Recruit your crew. The registry needs volunteers, women, wildland firefighters, and retirees most. Bring it up at shift change. Thirty minutes at the kitchen table is one of the few cancer actions in the fire service that’s genuinely free.
5. Keep doing the physical stuff too. Enrollment doesn’t replace decon after every fire, annual skin checks, or the age-appropriate screenings we’ve outlined before — it runs alongside them.

The Bottom Line

You can’t control every exposure you’ve already had. You can control whether the next 20 years of firefighter cancer research — and the benefit laws built on it — reflect people like you. Enrolling in the National Firefighter Registry is a 30-minute action with a career-length payoff for the entire fire service.

For more evidence-based health guidance built for the realities of the job — cancer screening schedules, decon practices, cardiac risk, sleep, and hormones for first responders — visit policefire.health.

This article is for informational purposes only and does not constitute medical advice. BadgeBiohacking (policefire.health) is a comparison and review site. We may earn affiliate commissions from links on this site. Always consult a qualified healthcare provider before starting any treatment.