PTSD & Cannabis


Marijuana blocks PTSD in rats


Jerusalem – Marijuana administered in a timely fashion could block the development of post-traumatic stress disorder symptoms in rats, a new study conducted at Haifa University has found.

The study, which was conducted by researchers at the university’s psychology department and published in the Neuropsychopharmacology journal, found that rats which were treated with marijuana within 24 hours of a traumatic experience, successfully avoided any symptoms of PTSD.

“There is a critical ‘window of time’ after trauma, during which synthetic marijuana can help prevent symptoms similar to PTSD in rats,” said Dr Irit Akirav who led the study.

In the first part of the experiment, rats were exposed to extreme stress, and were found to display symptoms resembling PTSD in humans.

They were then divided into four groups, with the first given no marijuana, the second given a marijuana injection two hours after being exposed, the third after 24 hours and the fourth after 48 hours.

The researchers examined the rats a week later and found that the group that had not received marijuana, as well as the one that received the injection after 48 hours, displayed PTSD symptoms and a high level of anxiety.

Although the rats in the other two groups also displayed high levels of anxiety, the PTSD symptoms had totally disappeared.

“This shows that the marijuana administered in the proper ‘window of time’ does not erase the experience, but can help prevent the development of PTSD symptoms in rats,” Akirav said.

“We also found that the effects of the cannabinoids were mediated by receptors in the amygdala area of the brain, known to be responsible for mediation of stress, fear and trauma,” she noted.

While a decisive parallel between emotional states in humans and animals cannot always be drawn, Akirav was confident psychiatrists will take her research forward to implement it on humans.


  1. I have a list: psychosis, schizophrenia, post-traumatic stress disorder, emotional displacement, paranoia, narcissism, and a touch of autism. With just ONE HIT, cannabis melts all that away like a stick of butter in the fireplace AND it improves my paradigm and self-perception EVERY TIME.

    I’d like to think that the prohibition of marijuana is just due to ignorance, but the longer prohibition remains alive, it looks more and more evil every day.

    How can the government take away something that helps sick people? Do they TRULY believe that marijuana has no medicinal value? Are they SURE that their studies are legitimate? What about the studies that tell a different story than the ones cherry-picked by the government?

    I’m sorry, but I cannot see prohibition as the result of ignorance anymore. With prescription drugs regularly being pulled off the shelf for killing people, the government would have to claim complete ignorance of THAT to make their ignorance about marijuana make sense. They cannot be ignorant of marijuana’s beneficial properties. They just can’t be. They’re supposed to know more than the people know, being a government full of secrets. But they seem hell-bent on keeping marijuana demonized and illegal forever. And for that, they are mean, nasty, evil. Their ways rhyme with the nastiest medieval storyline out of Hollywood where the government rapes its citizens of everything they need to live.


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