Frontier mental health research: psychedelics & drug studies

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13 papers

Addiction

Based on 33 papers

Researchers are testing several new and old approaches to treat addiction. The most attention is on psychedelic-assisted psychotherapy — that is, giving a drug like psilocybin, MDMA, or ibogaine together with careful therapy — and on new drug compounds tested in animals. Some early clinical trials and many reviews call these approaches “promising,” but most evidence is still limited, mixed, or from small studies. At the same time, for some substances like methamphetamine there are no approved medicines that clearly reduce use. Animal studies and new chemical versions of old drugs show strong early results, but human safety and larger trials are still needed. Researchers also stress that the drug effect and the therapy around it (preparation, setting, and follow-up) both matter for how well treatment works.

Key findings

  • Giving psychedelic drugs together with psychotherapy has shown promising results in small clinical trials and reviews for some addictions and other mental illnesses. 15063 15051 15085 15073
  • MDMA-assisted therapy has the strongest and most consistent trial evidence for PTSD, and psychedelic therapies more broadly have growing but still limited evidence for some forms of addiction. 15063 15053 15085
  • Ibogaine has shown signs of helping with addiction in some studies, but it carries serious heart and neurological risks that stopped some earlier trials. 15085
  • Researchers made new “oxa-iboga” compounds that in lab heart-cell tests did not show the heart-rhythm risk of ibogaine, and in rats a single dose reduced long-term opioid use and relapse-like behavior. 15115
  • For methamphetamine use disorder, there are currently no approved medicines that clearly reduce cravings or lead to lasting abstinence in people. 15116
  • 5‑MeO‑DMT (a fast, short-acting psychedelic) is being explored as a possible treatment for alcohol use disorder, but the evidence is early; human reports show powerful subjective effects and brain-rhythm changes that might be relevant. 15122
  • Good preparation and therapeutic support before and after a psychedelic session — things like safety screening, building trust, and planning the setting — are widely agreed to be important for safety and likely for outcomes, but exact methods vary across studies. 15065 15051 15063
  • Some promising findings come from small studies, animal work, or historical reports. That means results may not always apply to people yet, and researchers note limits like small sample sizes and underrepresentation of people of color in trials. 15073 15095 15085
  • When ketamine is used under medical supervision for depression, large reviews find few clear cases of dependence, but patients still report worry about addictive risk and want more long-term safety data and monitoring. 8828 12365
  • In some communities, traditional healers use plant remedies for alcohol-related problems. These reports document local practices but do not prove those plants are effective in controlled clinical trials. 15118

Attention-deficit-hyperactivity disorder and reward deficiency syndrome

Kenneth Blum, Amanda Lih Chuan Chen, Eric R. Braverman, David E. Comings, Thomas J.H. Chen, Vanessa Arcuri, et al.

This paper reviews genetic studies that link several genes to higher risk for ADHD. It says problems in the brain's reward system—especially low dopamine activity—may make people seek things that raise dopamine. The authors propose that these gene variants form a “reward deficiency syndrome” (RDS) that may include ADHD, and…

Attention Deficit Hyperactivity Disorder Bipolar Disorder and Treatment Neurotransmitter Receptor Influence on Behavior

Cannabinoids in health and disease

Natalya M. Kogan, Raphael Mechoulam

This webpage explains how DoktorABC offers medical cannabis services in Germany. You fill an online medical questionnaire, a licensed doctor reviews it, and may issue a prescription. The page also describes costs, delivery times, legal status, types of products, common effects of THC and CBD, and possible side effects.

Cannabis and Cannabinoid Research Neuroscience and Neuropharmacology Research Neurotransmitter Receptor Influence on Behavior

Ibogaine treatment outcomes for opioid dependence from a twelve-month follow-up observational study

Geoff Noller, Chris Frampton, Berra Yazar‐Klosinski

A single ibogaine treatment reduced opioid withdrawal symptoms and achieved opioid cessation or sustained reduced use in dependent individuals as measured over 12 months. Ibogaine's legal availability in New Zealand may offer improved outcomes where legislation supports treatment providers to work closely with other health professionals.

Opioid Use Disorder Treatment Prenatal Substance Exposure Effects Substance Abuse Treatment and Outcomes

Actions of delta-9-tetrahydrocannabinol in cannabis: Relation to use, abuse, dependence

ZIVA D COOPER, MARGARET HANEY
PubMed Central (PMC) Summary & key facts 2009 126 citations

This review says that the main active part of cannabis, THC, acts at the brain's CB1 receptor to produce rewarding effects, reinforce smoking, and can lead to dependence and withdrawal. Evidence comes from animal and human studies. Higher THC strength raises blood THC levels and may raise the chance of…

Cannabis and Cannabinoid Research Forensic Toxicology and Drug Analysis Neurotransmitter Receptor Influence on Behavior

Ibogaine Detoxification Transitions Opioid and Cocaine Abusers Between Dependence and Abstinence: Clinical Observations and Treatment Outcomes

Deborah C. Mash, Linda Duque, Bryan Page, Kathleen Allen-Ferdinand
Frontiers in Pharmacology Summary & key facts 2018 103 citations

Ibogaine is a psychoactive chemical from a West African shrub that some clinics use to help people stop using opioids or stimulants. Small studies, animal research, and many personal reports say a single high dose can cut opioid withdrawal and reduce cravings. For example, one study found 50% of participants…

Neurotransmitter Receptor Influence on Behavior Opioid Use Disorder Treatment Substance Abuse Treatment and Outcomes

On the safety of repeated ketamine infusions for the treatment of depression: Effects of sex and developmental periods

Caroline E. Strong, Mohamed Kabbaj
Neurobiology of Stress Summary & key facts 2018 58 citations

This review looks at what is known about the safety of repeated low-dose ketamine infusions for people with treatment-resistant depression and whether risks differ by sex and age (adolescence vs adulthood). A single low-dose infusion (commonly 0.5 mg/kg i.v.) can reduce depressive symptoms and suicidal thoughts within hours and usually…

Stress Responses and Cortisol Treatment of Major Depression Tryptophan and brain disorders

A Multi-Level Analysis of Biological, Social, and Psychological Determinants of Substance Use Disorder and Co-Occurring Mental Health Outcomes

Cecilia Ilaria Belfiore, Valeria Galofaro, Deborah Cotroneo, Alessia Lopis, Isabella Tringali, Valeria Denaro, et al.
Psychoactives Summary & key facts 2024 40 citations

Researchers looked at sixty studies to see how biology, social life, and psychology mix together to affect substance use problems and mental health. They found that brain systems, genes, childhood experiences, parenting, personality, and existing mood or anxiety problems all interact. This makes addiction and related psychiatric symptoms complicated, especially…

Bipolar Disorder and Treatment Cannabis and Cannabinoid Research Child and Adolescent Psychosocial and Emotional Development Cannabis Other

Recommendations for Reducing the Risk of Cannabis Use-Related Adverse Psychosis Outcomes: A Public Mental Health-Oriented Evidence Review

Benedikt Fischer, Wayne Hall, Thiago Marques Fidalgo, Eva Hoch, Bernard Le Foll, María Elena Medina‐Mora, et al.
Journal of Dual Diagnosis Summary & key facts 2023 24 citations

This paper reviewed studies since 2016 to identify cannabis-related factors linked with higher risk of psychosis. It found that personal and genetic vulnerability, earlier age of first use, more frequent use, higher-THC products, how cannabis is taken, and using other drugs all raise the odds of cannabis-related psychosis. Evidence that…

Bipolar Disorder and Treatment Cannabis and Cannabinoid Research Homelessness and Social Issues Cannabis

Ketamine treatment for depression: qualitative study exploring patient views

Sagar Jilka, Clarissa Mary Odoi, Emma Wilson, Sazan Meran, Sara Simblett, Til Wykes
PubMed Central (PMC) Summary & key facts 2021 23 citations

Researchers ran three focus groups with 14 people who have depression but had not tried ketamine. Participants saw ketamine as promising but were worried about its reputation as a party drug, possible long-term harms, and how it would be monitored. They wanted clear public information, better evidence about long-term safety,…

Alcoholism and Thiamine Deficiency Treatment of Major Depression Tryptophan and brain disorders Ketamine

Characteristics of and 3-month health outcomes for people seeking treatment with prescribed cannabis: Real-world evidence from Project Twenty21

Michael T. Lynskey, Anne Katrin Schlag, Alkyoni Athanasiou‐Fragkouli, David R. Badcock, David Nutt
Drug Science Policy and Law Summary & key facts 2023 19 citations

Project Twenty21 collected real-world data from people in the UK who sought prescribed medicinal cannabis. Data at treatment start were available for 2,833 patients and 1,410 had 3-month follow-up for anxiety, chronic pain or PTSD. On average, patients reported improvements in condition-specific symptoms and in general health and quality of…

Cannabis and Cannabinoid Research Homelessness and Social Issues Substance Abuse Treatment and Outcomes

Is there a risk of addiction to ketamine during the treatment of depression? A systematic review of available literature

Gianmarco Ingrosso, Anthony J. Cleare, Mário F. Juruena
PubMed Summary & key facts 2025 13 citations

This systematic review looked at 16 studies of ketamine used to treat adults with depression, covering 2,174 patients. The authors found few clear cases of tolerance or dependence (four patients) and conclude that, overall, ketamine appears relatively safe for depression when given under medical supervision, with careful monitoring and dosing.…

Mental Health Research Topics Treatment of Major Depression Tryptophan and brain disorders Ketamine
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