The active ingredient in magic mushrooms may be able to relieve symptoms in adults suffering from major depressive disorder for up to a year, according to a new study.
Scientists have been increasingly investigating whether psychedelics could have therapeutic use for those struggling with poor mental health over the past couple of decades.
Previous research into psilocybin, found in magic mushrooms, has suggested that it can relieve depressive symptoms for a month.
Now, researchers at John Hopkins Medicine have followed up on that research with a study published Tuesday in that suggests the positive effect of psilocybin can last for a year.
Researchers followed 27 participants who had a long-term history with depression, 88 per cent of whom had previously tried standard antidepressant medication.
Participants were given two doses of psilocybin, provided two weeks apart, and then returned for follow-ups to check on their depressive symptoms at regular intervals in the year that followed. Twenty-four participants completed all follow-ups.
Researchers observed large decreases in depressive symptoms after the treatments, and the severity of their depression remained low for one month, three months, six months and a year after they received the treatment.
鈥淥ur findings add to evidence that, under carefully controlled conditions, this is a promising therapeutic approach that can lead to significant and durable improvements in depression,鈥 Dr. Natalie Gukasyan, assistant professor of psychiatry and behavioral sciences at the Johns Hopkins University School of Medicine, said
The idea behind using psychedelics is that a hallucinogen like psilocybin has the ability to change a person鈥檚 perception of their surroundings and their thoughts or feelings.
Participants were split into two groups, one which received treatment immediately, and one which received it after an eight-week waiting period. Both groups saw improvement.
Researchers used a diagnostic tool for measuring depression, the GRID-Hamilton Depression Rating Scale, where lower scores mean less or little depression, and scores of 24 or more indicate severe depression.
The average decrease in score was for participants to go from 22.8 before treatment to 7.7 around 12 months after treatment, with the highest average score reaching 9.3 at three months after treatment.
More than half of the patients were considered to be in remission a year after the treatment.
鈥淧silocybin not only produces significant and immediate effects, it also has a long duration, which suggests that it may be a uniquely useful new treatment for depression,鈥 Roland Griffiths, professor in the Neuropsychopharmacology of Consciousness at the Johns Hopkins University School of Medicine, and founding director of the Johns Hopkins Center for Psychedelic and Consciousness Research, said in the release. 鈥淐ompared to standard antidepressants, which must be taken for long stretches of time, psilocybin has the potential to enduringly relieve the symptoms of depression with one or two treatments.鈥
It鈥檚 important to note that these studies were done in very controlled settings and with support from knowledgeable therapists and clinicians, and that researchers specified that they do not currently recommend individuals using substances containing psilocybin to combat depression on their own.
No participants reported any serious adverse events related to the psilocybin during the study period, and participants did not partake in psilocybin outside of the study context.
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