PTSD in 9/11 responders didn’t start improving for nearly a decade

For most 9/11 first responders, post-traumatic stress disorder (PTSD) symptoms didn’t improve until nearly a decade later, and about 10 per cent of those with the condition experienced worsening symptoms 20 years on. The finding underscores just how persistent PTSD can be and highlights the need for more effective treatments.

Frank Mann at Stony Brook University in New York and his colleagues tracked PTSD symptoms…