Magic Mushrooms Lift Severe Depression

May 17, 2016

Magic mushrooms have lifted severe depression in a dozen volunteers in a clinical trial, raising scientists’ hopes that the psychedelic experiences beloved of the Aztecs and the hippy counter-culture of the 1970s could one day become mainstream medicine.

A clinical trial, which took years and significant money to complete due to the stringent regulatory restrictions imposed around the class 1 drug, has found that two doses of psilocybin, the active substance in the mushrooms, was sufficient to lift resistant depression in all 12 volunteers for three weeks, and to keep it away in five of them for three months.

The size of the trial and the absence of any placebo means the research, funded by the Medical Research Council and published in the Lancet Psychiatry journal (pdf), is a proof of principle only.

The scientists, from Imperial College London, said they hoped the results would encourage the MRC or other funders to put up the money needed for a full trial. However, the use of a placebo control, comparing those who use the drug with those who do not, will always be difficult, because it will be obvious who is having a psychedelic experience.

In spite of the outcome, the researchers urged people not to try magic mushrooms themselves.

The lead author, Dr Robin Carhart-Harris, said: “Psychedelic drugs have potent psychological effects and are only given in our research when appropriate safeguards are in place, such as careful screening and professional therapeutic support.

“I wouldn’t want members of the public thinking they can treat their own depressions by picking their own magic mushrooms. That kind of approach could be risky.”

The senior author, Prof David Nutt, said it was justified for researchers to explore the medical use of banned recreational drugs.

“It is important that academic research groups try to develop possible new treatments for depression as the pharmaceutical industry is pulling out of this field‎. Our study has shown psilocybin is safe and fast acting so may, if administered carefully, have value for these patients.”

All the volunteers had severe depression and had failed to improve on at least two standard antidepressants. They were initially given a low dose of psilocybin to ensure they had no adverse reactions (none did) and then a higher dose a week later. They were treated in a specially prepared room, with music playing and in the presence of two psychiatrists who talked with them throughout. The psychedelic experience lasted up to five hours.

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