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Veterans' PTSD Linked to Daily Mood and Cannabis Use

9/26/2025

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Summary

Story summary

Higher posttraumatic stress disorder (PTSD) symptoms predicted greater next-day negative affect.
Higher negative affect predicted about 12% more PTSD symptoms the following day.
The data come from 74 U.S. veterans over three months via daily entries.
On the same day, longer cannabis use linked to fewer PTSD symptoms.
Limitations include self-report data and a small sample; more research is needed.

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Story summary

Higher posttraumatic stress disorder (PTSD) symptoms predicted greater next-day negative affect.
Higher negative affect predicted about 12% more PTSD symptoms the following day.
The data come from 74 U.S. veterans over three months via daily entries.
On the same day, longer cannabis use linked to fewer PTSD symptoms.
Limitations include self-report data and a small sample; more research is needed.