Just a single dose of psilocybin can provide rapid relief from depression, a new small-scale clinical trial has shown.
And after six weeks, half of the psilocybin patients had no depression"Our results suggest that psilocybin can provide rapid, clinically meaningful improvement in depression and may serve as an alternative to standard treatment when fast symptom reduction is important,” said lead researcher Dr. Hampus Yngwe, a doctoral student and consultant psychiatrist at the Karolinska Institute in Sweden.
"However, the long-term effects are uncertain,” Yngwe said in a news release. “Repeated treatments may be needed to prevent relapse. This needs to be investigated in larger studies. ”For the new study, researchers recruited 35 people ages 20 to 65 who had at least a 22 score on the 60-point Montgomery-Asberg Depression Rating Scale .
A score of 20 to 34 points indicates moderate depression and 35 to 60 points severe depression. Half of the patients were randomly assigned to take a single 25 milligram dose of psilocybin. The other half tookAll participants were asked to lie down on the day of treatment and focus inwardly while wearing an eye mask and listening to music.
Eight days after treatment, the psilocybin patients had an average decrease of 9.7 points in their MADRS score, compared to 2.4 for the placebo group. The effect persisted for at least six weeks, with half the psilocybin patients in remission from depression at that point. After a year, the same number of psilocybin patients were still in remission, but by then as many of those who had taken niacin also had recovered, researchers said.
“It is important to emphasize that the treatment is not risk-free and that some patients may need extra support,” senior researcher Dr. Johan Lundberg said in a news release. Lundberg is a professor of clinical neuroscience at the Karolinska Institute. One drawback – almost all the participants could tell whether they'd taken psilocybin or niacin, which might have influenced their outcomes, researchers noted.
Researchers next plan to analyze brain scans, as well as blood and spinal fluid samples, that were taken before and after people received their dose.
“Research suggests that the interaction between parts of the brain is impaired in depression and that this may be linked to changes in the connections between nerve cells, known as synapses,” Yngwe concluded. “In preclinical studies, psychedelics have been shown to stimulate synaptic growth. We therefore want to investigate whether psilocybin alters synaptic density in the brain. ”Know when you or someone else is depressed.
Get information on depression symptoms, signs, tests, and treatments for many types of depression chronic depression and postpartum depression.
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