Hundreds of first responders vividly recall their feelings during the World Trade Center attacks, even 25 years later. They describe being unable to think, see, or smell anything beyond the need to dig and clear debris. Rest was impossible because lives depended on their immediate actions. Despite the unprecedented nature of 9/11, such tragedies occur frequently.
As an occupational health physician working with 9/11 responders, I recognize similar experiences among other emergency workers. These include those dealing with the earthquakes in Venezuela, Colombia, and Indonesia in 2026, or the floods in Nepal. These responders often recover human remains amid dust, toxic fumes, and cries for help. Such trauma takes a significant toll on their well-being.
Impact of PTSD on First Responders
Post-traumatic stress disorder (PTSD) is a complex mental health condition triggered by experiencing or witnessing traumatic events. It involves ongoing emotional impacts, including intrusive memories and heightened alertness. Anxiety and depression frequently accompany PTSD.
About 23% of World Trade Center responders have been diagnosed with PTSD, compared to around 6% in the general U.S. population. These first responders link their PTSD with cognitive difficulties that continually affect their day-to-day lives. Symptoms such as anxiety, depression, and intrusive thoughts persist.
Trauma and Accelerated Brain Aging
With age, many 9/11 first responders report worsening memory and concentration, fearing a loss of independence. Physical illnesses, cognitive changes, and emotional distress often reinforce each other. A study involving over 5,000 responders without dementia found 228 cases developing dementia before 65. Those heavily exposed to neurotoxic dust and debris at ground zero faced a higher dementia risk, even after controlling for various factors.
Earlier research on workers exposed to neurotoxic metals in Italy led to concerns about 9/11 responders’ brain health. Brain scans showed an increase in beta-amyloid deposits, linked to Alzheimer’s disease. A 2025 study used MRI and AI to gauge brain age, finding responders with PTSD had brains appearing three years older than their actual age. Each month spent at ground zero added to apparent brain aging.
Support for First Responders
The experiences of 9/11 first responders reflect ongoing health issues. As responders age, their health needs and support systems must continuously adapt. Although each 9/11 anniversary brings pain and restlessness, many responders take pride in their efforts, exemplifying human solidarity.
Honoring their legacy entails caring for those who protect us. Society must ensure ongoing support for responders’ mental, cognitive, physical, and social well-being. First responders were there for America during its crisis. Now, America must be there for them. A free press is vital for democracy, supporting informed dialogue.
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