Firefighting is one of the most dangerous civilian occupations in the United States, though the biggest killer isn’t what most people expect. In 2024, 72 firefighters died on duty, and 42 of those deaths were caused by stress or overexertion, most often in the form of sudden cardiac events. The flames and collapsing structures that dominate public perception account for a much smaller share of the risk. The full picture includes heart attacks on scene, elevated cancer rates years after retirement, toxic chemical exposure from protective gear itself, and mental health consequences that follow firefighters home long after a shift ends.
What Actually Kills Firefighters on Duty
The leading cause of on-duty firefighter death is cardiovascular failure. Each year, 45 to 50 firefighters die from heart and blood vessel disease while working, and over 75% of those deaths happen during physically demanding tasks tied to emergency response or training. The combination of extreme heat, heavy gear, adrenaline surges, and sustained physical exertion pushes the cardiovascular system to its limits. A firefighter’s heart rate can spike to near-maximum levels within minutes of entering a burning structure, and for those with underlying heart conditions (sometimes undiagnosed), that spike can be fatal.
The remaining on-duty deaths in 2024 broke down across several categories: nine firefighters were struck by objects, eight died in vehicle collisions, and four were caught or trapped. The split between career and volunteer firefighters was nearly even, with 33 career and 32 volunteer deaths. Historically, volunteers have made up a slightly larger share of fatalities despite outnumbering career firefighters by roughly three to one, though direct rate comparisons are difficult because volunteer hours aren’t consistently tracked.
Non-Fatal Injuries Are Extremely Common
Deaths tell only part of the story. Tens of thousands of firefighters are injured on duty each year without making the fatality statistics. The leading causes of these injuries are fires and explosions (responsible for 36% of emergency department visits) and overexertion (20%). Sprains and strains are the most frequent injury type across nearly every activity firefighters perform: 28% of injuries during firefighting, 32% during training, and 36% during patient care. Lifting heavy equipment, dragging hose lines, carrying victims, and working in awkward positions while wearing 50-plus pounds of gear all contribute to chronic musculoskeletal damage over a career.
Cancer Risk After Years of Exposure
Firefighters face a 9% increase in cancer diagnoses and a 14% increase in cancer-related deaths compared to the general population, according to a large study by the National Institute for Occupational Safety and Health. The cancers with the steepest increases include mesothelioma (86% higher than expected), esophageal cancer (31% higher), intestinal cancer (27% higher), rectal cancer (32% higher), kidney cancer (22% higher), and lung cancer (8% higher). These elevated rates reflect years of breathing in combustion byproducts, absorbing chemicals through the skin, and handling contaminated equipment.
One emerging concern is the protective gear itself. Turnout gear, the heavy coat and pants firefighters wear into fires, contains industrial chemicals known as PFAS. These “forever chemicals” have been linked to cancer and other health problems. Studies from the National Institute of Standards and Technology found that the highest concentrations sit in the outermost layers of the gear, and that wear, heat exposure, and weathering actually increase the amount of PFAS present. Firefighters have measurably higher blood levels of certain PFAS compounds than the general public, meaning the equipment designed to protect them is simultaneously introducing a different kind of hazard.
The cancer risk is especially pronounced later in life. A major mortality study tracking firefighters in San Francisco, Chicago, and Philadelphia found that cancer deaths were significantly elevated among firefighters aged 65 and older but not among younger ones, suggesting these exposures accumulate over decades before showing up as disease.
Wildland Firefighters Face Different Hazards
Structural firefighters and wildland firefighters share the title but work in very different conditions. Wildland crews spend days or weeks on fire lines, breathing dense smoke for extended shifts in extreme heat. The known and suspected health effects of prolonged wildland smoke exposure include eye and throat irritation, worsening of asthma and chronic lung disease, bronchitis, pneumonia, and cardiovascular problems. There’s also evidence of adverse birth outcomes among those exposed.
What makes wildland firefighting particularly tricky from a safety standpoint is that respiratory protection works against you in the heat. Wearing a respirator during intense physical labor in high temperatures raises the risk of heat illness, creating a cruel tradeoff between protecting your lungs and protecting yourself from heat stroke. The long work schedules and higher breathing rates that come with the job mean wildland firefighters inhale far more smoke particles than a bystander in the same area would. Scientists still don’t fully understand the long-term consequences of repeated, high-concentration smoke exposure over a career.
Mental Health and Suicide
Firefighters are more likely to die by suicide than in the line of duty. That single statistic reframes the danger of the profession entirely. Repeated exposure to traumatic scenes, including burned victims, dead children, failed rescue attempts, and mass casualty events, builds a psychological toll that compounds over years. PTSD, depression, anxiety, and substance use disorders are all significantly more common among firefighters and other first responders than in the general population.
The culture of the profession can make things worse. Fire service traditions emphasize toughness and self-reliance, which historically discouraged seeking help. While attitudes have shifted in recent years with more departments offering peer support programs and mental health resources, the suicide data makes clear that the invisible injuries of the job remain among its most lethal dangers.
Life Expectancy: A Complicated Picture
You might assume firefighters die younger than average, but the data is more nuanced. The large mortality study of firefighters in three major U.S. cities found that overall death rates were actually slightly lower than expected, likely because firefighters tend to be physically fit and must pass medical screenings to stay on the job. That fitness advantage, however, erodes with age. Among firefighters 65 and older, death rates from cancer, heart disease, and stroke were significantly elevated compared to the general population. So while the job doesn’t necessarily shorten your life in a straightforward way, it shifts the causes of death toward occupational diseases that emerge later.
Safety Standards Are Being Updated
Federal workplace safety rules for firefighters have barely changed since 1980. OSHA’s existing Fire Brigades standard was written over four decades ago and has received only minor updates since. In 2024, OSHA proposed a major overhaul that would expand protections beyond just firefighting to cover all emergency response activities, reflecting the reality that today’s firefighters respond to medical calls, hazmat incidents, technical rescues, and natural disasters. The proposed rule went through public hearings in late 2024 and is still being finalized, but it represents the first serious regulatory update for the profession in a generation.
In the meantime, individual departments have adopted their own measures: mandatory cardiac screening programs, cancer-prevention protocols like cleaning gear immediately after fires, limits on consecutive shift hours, and mental health programs. These local efforts vary widely, and a volunteer department in a rural area typically has far fewer resources than a major metropolitan fire department.