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Brain differences in WTC responders with PTSD (Level A1) — a black and white photo of various mri images

Brain differences in WTC responders with PTSDCEFR A1

28 Dec 2025

LevelA1
A2
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Adapted from Gregory Filiano-Stony Brook, Futurity • CC BY 4.0

Photo by National Cancer Institute, Unsplash

Level A1 – Beginner
2 min
76 words
  • Many WTC responders still have long-term PTSD symptoms.
  • The mental health problem began after the 2001 attacks.
  • Researchers used new brain scans to study responders.
  • The scans looked at the border of brain tissue.
  • People with PTSD showed different brain structure on scans.
  • Their gray matter looked more like white matter.
  • Differences were linked to re-experiencing symptoms.
  • Combining scan markers helped identify responders with PTSD.
  • The work comes from WTC health programs and researchers.

Difficult words

  • responder — person who helps after an emergency
    responders
  • scan — picture of inside the body using machines
    scans
  • tissue — parts that make up the body
  • border — edge between two parts or areas
  • re-experiencing — having the same bad memory again and again
  • gray matter — brain tissue with nerve cells
  • white matter — brain tissue with nerve fibers

Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.

Discussion questions

  • Have you ever seen a brain scan?
  • Do you know anyone who works as a responder?
  • Would you talk to a doctor about stress after a big event?

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