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September 21, 2011

Marijuana Helps Cure PTSD in Rats, Soldiers Could be Next: Study

By: International Business Times

International Business Times

Haifa University has been conducting research on posttraumatic stress disorder (PTSD) with rats. After exposing rats to high levels of stress, the researchers split the rats up into four groups and administered marijuana to three of the groups after varying lengths of time. The two groups of rats that received marijuana within the first 24 hours of the induced stress showed no signs of PTSD, although high anxiety was present. The results suggest that there is a “window of time” to treat PTSD and provide hope for research on human subjects.


Originally appearing here.

Marijuana administered soon after a traumatic event prevented post traumatic stress disorder in rats, according to a Haifa University study that could ease the way for veterans suffering from PTSD being treated with marijuana.

Researchers exposed rats to high levels of stress and then divided them into four groups: one that received marijuana two hours after being exposed, one that received marijuana after 24 hours, one that received marijuana after 48 hours and a control group that was not administered any marijuana. The rats in the groups that had received marijuana within 24 hours did not display symptoms of PTSD, although they did evince high anxiety.

Critical ‘Window of Time’ After Trauma

“There is a critical ‘window of time’ after trauma, during which synthetic marijuana can help prevent symptoms similar to PTSD in rats,”  Dr Irit Akirav, who led the study, told Agence France-Presse. “Marijuana administered in the proper ‘window of time’ does not erase the experience, but can help prevent the development of PTSD symptoms in rats.”

The results do not necessarily carry over for humans, but they nonetheless should cheer groups in America seeking approval for studies that would test medical marijuana as a means to treat PTSD. PTSD rates have soared among American troops returning from Iraq and Afghanistan.

“We really believe science should supersede politics,” said Dr. Sue Sisley, an assistant professor of psychiatry and internal medicine at Arizona. “This illness needs to be treated in a multidisciplinary way. Drugs like Zoloft and Paxil have proven entirely inadequate. And there’s anecdotal evidence from vets that cannabis can provide systematic relief.”


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