Frontier mental health research: psychedelics & drug studies

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8 papers

Psilocybin

Based on 45 papers

Researchers are actively testing psilocybin (the active part of “magic mushrooms”) as a possible treatment for several mental health problems. Early clinical trials—usually done under medical supervision with therapy before and after the drug session—have found quick improvements in some people with major depression, anxiety linked to serious illness, and other hard-to-treat conditions (but the studies are still small). (15135,15063,15056) Scientists propose several ways psilocybin might help, such as changing how brain networks communicate, boosting the brain’s ability to form new connections, and lowering brain inflammation. However, the exact reasons are not settled. Safety in careful clinical settings looks acceptable so far, but harms may be underreported, and unsupervised use can carry real risks. More and larger trials are needed, and many groups (for example people of color) were not well represented in early studies. (15132,15050,15135,15061,15095,15056)

Key findings

  • Psilocybin is being tested for major depression, anxiety (including cancer‑related anxiety), substance use problems, and other mental health conditions. 15135 15063 15056
  • In research studies, psilocybin is usually given as one or a few full (hallucinogenic) doses together with hours of preparation and follow‑up psychotherapy. 15063 15065 15056
  • Some clinical trials report rapid and sometimes lasting reductions in depression and anxiety after only one or a few psilocybin sessions. 15132 15063 15049
  • Trials done with people who have serious illnesses (for example advanced cancer) often show lower anxiety, less depression, and reduced fear of dying after psychedelic‑assisted therapy. 15055 15063
  • Clinical studies run in controlled settings have generally reported acceptable safety and mostly short‑lived side effects, but reviews warn that studies often do not track or report harms in a consistent way. 15135 15055 15061
  • In community or illegal settings, psychedelic use (including psilocybin) has been linked to increases in psychotic or manic symptoms for some users, and users in unregulated settings report more negative experiences than people in clinical trials. 15133 15072 15080
  • Scientists do not agree on one single reason psilocybin might help. Evidence points to changes in brain networks, increased neuroplasticity (the brain’s ability to form new connections), and lower inflammation as possible mechanisms. 15132 15135 15050
  • Many studies so far are small, have limited long‑term follow‑up, and underrepresent people of color, so we do not yet know how well results generalize to all groups or how long benefits and harms last. 15056 15095 15064

Adverse events in clinical treatments with serotonergic psychedelics and MDMA: A mixed-methods systematic review

Joost J. Breeksema, Bouwe Kuin, Jeanine Kamphuis, Wim van den Brink, Eric Vermetten, Robert A. Schoevers
Journal of Psychopharmacology Summary & key facts 2022 161 citations

Researchers reviewed studies of drugs that act on serotonin (so-called serotonergic psychedelics) and MDMA. They found that harms and bad reactions are not clearly defined in these studies and are probably reported less often than they actually happen. Some intense or frightening experiences during treatment might help people heal, but…

Chemical synthesis and alkaloids Forensic Toxicology and Drug Analysis Psychedelics and Drug Studies MDMA Psilocybin

Legal highs: staying on top of the flood of novel psychoactive substances

David Baumeister, Luis M. Tojo, Derek K. Tracy

This review explains the fast-growing problem of so-called "legal highs", which are better called novel psychoactive substances or NPS. Unknown labs keep making slightly different chemicals to avoid bans, and this led to about 80 new substances being spotted in one year. The paper groups these drugs into five main…

Forensic Toxicology and Drug Analysis Neurotransmitter Receptor Influence on Behavior Psychedelics and Drug Studies Cannabis Ketamine

A century of research on psychedelics: A scientometric analysis on trends and knowledge maps of hallucinogens, entactogens, entheogens and dissociative drugs

Marco Solmi, Chaomei Chen, Charles Daure, Anne Buot, Michael Ljuslin, Vincent Verroust, et al.

Researchers looked at published papers about psychedelic drugs from the last century, using citation maps and other tools to see how the field changed up to March 2022. They found that research was small and mostly about safety for many decades, then grew a lot after the 1990s into a…

Forensic Toxicology and Drug Analysis Neurotransmitter Receptor Influence on Behavior Psychedelics and Drug Studies Ayahuasca Ketamine

Psychedelic therapeutics in psychiatric conditions

Philip D. Harvey, Charles B. Nemeroff
Neuropsychopharmacology Summary & key facts 2026 1 citation

Researchers reviewed the fast-growing interest in psychedelic therapies. They found that even though hundreds of studies are under way, no psychedelic medicine is officially approved for any mental health condition yet. The review explains the kinds of drugs being tested, the conditions people hope to treat, and big challenges such…

Diverse academic research themes Forensic Toxicology and Drug Analysis Psychedelics and Drug Studies LSD MDMA

Ayahuasca and Its Main Component N,N-Dimethyltryptamine (DMT) for the Treatment of Mental Disorders: Mechanisms of Action, Clinical Studies, and Tools to Explore the Human Mind

Alice Melani, Giorgia Papini, Marco Bonaso, Letizia Biso, Shivakumar Kolachalam, Nicola Luigi Bragazzi, et al.
Biomedicines Summary & key facts 2026 0 citations

This paper reviews research on ayahuasca and its main ingredient, DMT, and how they might help with mental health. Ayahuasca is a plant brew that makes DMT work when you drink it because it also contains chemicals that stop the body from breaking DMT down. Lab studies and a small…

Alkaloids: synthesis and pharmacology Forensic Toxicology and Drug Analysis Psychedelics and Drug Studies Ayahuasca MDMA

Drug Decriminalization and Recriminalization: Predicting the Future in Uncertain Times

Laura I Appleman

This article reviews how drug laws in the United States are changing and clashing. Many states have moved to legalize or reduce penalties for marijuana and are testing whether psychedelics like psilocybin and MDMA can help with mental health. At the same time, some places have pushed back and even…

Forensic Toxicology and Drug Analysis HIV, Drug Use, Sexual Risk Psychedelics and Drug Studies Cannabis Ketamine

Hallucinations Induced by Psychoactive Drugs: Mechanisms, Consequences, and Therapeutic Interventions

This review explains how certain psychoactive drugs can cause hallucinations and why that matters. It says drugs such as psilocybin and LSD change brain chemicals called serotonin and dopamine, and that can make people see or hear things that are not there. Effects can be mild or very serious, sometimes…

Forensic Toxicology and Drug Analysis Hallucinations in medical conditions Psychedelics and Drug Studies LSD Other

SSRIs, Psilocybin, MDMA, and Disease Modeling: Strategies to Advance PTSD Treatment

Momoko Ishii, Mark Zervas
Summary & key facts 2026 0 citations

This paper is a position review that looks at three drugs—SSRIs (a common antidepressant), psilocybin (a psychedelic), and MDMA—and how they change brain circuits that use serotonin. The authors note that all three are already used or being tested as treatments for post-traumatic stress disorder (PTSD). They say we still…

Cannabis and Cannabinoid Research Forensic Toxicology and Drug Analysis Psychedelics and Drug Studies MDMA Psilocybin
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