The prohibition on psychedelics was memorably described as "the worst case of scientific censorship since the Catholic Church banned the works of Copernicus and Galileo" by former UK Drugs Czar David Nutt, and despite the ban, there has been a consistent, determined, very promising (sometimes surprising) drumbeat of scientific papers about the use of psilocybin ("magic mushrooms") and other psychedelics in treating a range of chronic illnesses, including mental illnesses. Read the rest

The psilocybin in magic mushrooms is a potent psychedelic for animals. But what good is the psilocybin for the shrooms? New genetic research from Ohio State University suggests that the psilocybin might act as an insect repellant, protecting the mushrooms. From New Scientist:

The gene cluster (linked to psilocybin production) is found in several distantly related groups, suggesting that the fungi swapped genes in a process called horizontal gene transfer. This is uncommon in mushrooms: it is the first time genes for a compound that is not necessary for the fungi’s survival – called a secondary metabolite – have been found moving between mushroom lineages.

Since these genes have survived in multiple species, Slot thinks psilocybin must be useful to the fungi. “Strong selection could be the reason this gene cluster was able to overcome the barriers to horizontal gene transfer,” (researcher Jason Slot) says.

Hallucinogenic mushrooms often inhabit areas rich in fungi-eating insects, so Slot suggests psilocybin might protect the fungi, or repel insects from a shared food source, by somehow influencing their behaviour.

A "bad trip" on psychedelic mushrooms may lead to "enduring increases in well-being," according to a new study from Johns Hopkins University School of Medicine. Neuroscientist Roland Griffiths and colleagues surveyed nearly 2,000 adults about their psilocybin experiences. Those who experienced bad trips had taken, on average, a powerful dose of 4 grams. From Psypost:

A majority of the participants — 62 percent — said their bad trip was among the top 10 most psychologically difficult situations of their lives. Eleven percent said it was their number one most difficult experience.

But 34 percent of participants said the bad trip was among the top five most personally meaningful experiences of their life and 31 percent said it was the among the top five most spiritually significant. And 76 percent said the bad trip had resulted in an improved sense of personal well-being or life satisfaction. Forty-six percent said they would be willing to experience the bad trip all over again.

"Survey study of challenging experiences after ingesting psilocybin mushrooms: Acute and enduring positive and negative consequences" (Journal of Psychopharmacology) Read the rest

In the last decade, researchers at Johns Hopkins University and elsewhere have launched new studies investigating whether psychedelic drugs, from shrooms to LSD to DMT, can treat mental disorders ranging from depression and PTSD to anxiety and obsessive-compulsive disorder. Vox reporters German Lopez and Javier Zarracina surveyed the state of medical research on hallucinogens:

In a recent study, British researchers used brain imaging techniques to gauge how the brain looks on LSD versus a placebo. They found big differences between LSD and the placebo, with the images of the brain on LSD showing much more connectivity between different sections of the mind.

This can help explain visual hallucinations, because it means various parts of the brain — not just the visual cortex at the back of the mind — are communicating during an LSD trip.

This, researchers argued, may show not just why psychedelic drugs trigger hallucinogenic experiences but also why they may be able to help people. "In many psychiatric disorders, the brain may be viewed as having become entrenched in pathology, such that core behaviors become automated and rigid," the researchers wrote. "Consistent with their ‘entropic’ effect on cortical activity, psychedelics may work to break down such disorders by dismantling the patterns of activity on which they rest."

"The fascinating, strange medical potential of psychedelic drugs, explained in 50+ studies" (Vox)

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Johns Hopkins University School of Medicine seeks religious and spiritual leaders to participate in a research study on psilocybin and mystical experience. Read the rest