Frontier mental health research: psychedelics & drug studies

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7 papers

Anxiety

Based on 52 papers

Research points to two clear groups of treatments for anxiety. First, ordinary approaches like exercise — especially walking and other regular physical activity — have strong, high-quality evidence showing medium-sized reductions in anxiety symptoms. These are proven in many randomized trials and reviews. Second, newer substance-assisted therapies (often called psychedelic‑assisted therapy) are promising. Small clinical trials and reviews show reductions in anxiety and related problems after carefully supervised doses of drugs such as psilocybin, MDMA, ketamine, and ayahuasca. However, these drug approaches are mostly early-stage or done in special research settings and need more, larger trials before they can become routine care. People thinking about or treating anxiety should know that drug‑assisted therapies are almost always given together with serious psychological support. How the drug is given, the preparation before it, and follow-up therapy matter a lot. There are also safety and equity issues to watch: some psychedelics can have rare lasting side effects, many studies are small, and people of color have been underrepresented in trials. For now, exercise has the clearest and broadest evidence. Other treatments are promising but still need more testing and careful medical oversight.

Key findings

  • Many high-quality reviews find regular physical activity reduces anxiety by a medium amount across many trials. 8792
  • Walking specifically lowers anxiety symptoms compared with doing nothing, based on 26 randomized trials pooled together. 8785
  • Clinical trials and reviews report that psychedelic-assisted therapies (drugs given with therapy) reduced anxiety symptoms in people diagnosed with anxiety disorders. 15068 15063 15056
  • For post‑traumatic stress disorder (a trauma-related anxiety condition), MDMA given with psychotherapy produced large benefits in several controlled trials. 15063
  • Psychedelic drugs appear to change the brain in ways that could help anxiety and mood problems. Lab and imaging studies report increased brain plasticity (the brain’s ability to form new connections) and changes in inflammation and brain networks after substances like psilocybin, DMT, and other psychedelics. 15132 15050 15091 15135
  • Ketamine produces fast antidepressant effects and has been tested as an alternative to electroconvulsive therapy; it has also been studied for anxiety-related conditions in some trials. 10149 10160 15068
  • Most studies of psilocybin and other classic psychedelics are small and done with close medical and psychological support, so experts say larger, well‑controlled trials are still needed before routine use. 15056 15078
  • How people are prepared and supported matters a lot: many guides and reviews agree that screening, setting expectations, building trust, and follow‑up therapy are core parts of substance‑assisted psychotherapy. 15065 15092 15063
  • People of color were underrepresented in many psychedelic-assisted psychotherapy studies, which limits how well the results apply to different ethnic groups. 15095
  • There are risks to be aware of: rare but long-lasting perceptual problems (called HPPD) and other psychological or physical side effects have been reported after hallucinogen use, so safety monitoring is important. 15048 15087

Effectiveness of physical activity interventions for improving depression, anxiety and distress: an overview of systematic reviews

Ben Singh, Tim Olds, Rachel Curtis, Dorothea Dumuid, Rosa Virgara, Amanda Watson, et al.
PubMed Summary & key facts 2023 784 citations

This umbrella review pooled evidence from 97 systematic reviews (1,039 randomized trials, 128,119 participants) to examine whether physical activity affects symptoms of depression, anxiety and psychological distress in adults. Overall, physical activity produced medium-sized reductions in symptoms (median effect size for depression = -0.43, for anxiety = -0.42; distress effect…

Behavioral Health and Interventions Eating Disorders and Behaviors Physical Activity and Health

Canadian Network for Mood and Anxiety Treatments (CANMAT) 2023 Update on Clinical Guidelines for Management of Major Depressive Disorder in Adults: Réseau canadien pour les traitements de l’humeur et de l’anxiété (CANMAT) 2023 : Mise à jour des lignes directrices cliniques pour la prise en charge du trouble dépressif majeur chez les adultes

Raymond W. Lam, Sidney H. Kennedy, G. Camelia Adams, Anees Bahji, Serge Beaulieu, Venkat Bhat, et al.

The CANMAT 2023 update gives doctors clear, up-to-date advice for treating adults with major depressive disorder. It puts evidence into a practical, clinician-friendly format. The update says treatment should be a team effort between patients and clinicians, be tailored to each person, and follow a planned, systematic process with regular…

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

Psychedelic Treatments for Psychiatric Disorders: A Systematic Review and Thematic Synthesis of Patient Experiences in Qualitative Studies

Joost J. Breeksema, Alistair Niemeijer, Erwin Krediet, Eric Vermetten, Robert A. Schoevers
CNS Drugs Summary & key facts 2020 207 citations

Researchers collected and read 15 studies where patients described their own experiences with psychedelic treatments for mental disorders. These studies looked at about 180 patient accounts across different drugs and different illnesses. Even though the drugs and treatment settings were very different, many patients described similar helpful processes, such as…

Chemical synthesis and alkaloids Neurotransmitter Receptor Influence on Behavior Psychedelics and Drug Studies Ayahuasca Ibogaine

Absolute and relative outcomes of psychotherapies for eight mental disorders: a systematic review and meta‐analysis

Pim Cuijpers, Clara Miguel, Marketa Ciharova, Mathias Harrer, Djordje Basic, Ioana A Cristea, et al.
PubMed Central (PMC) Summary & key facts 2024 107 citations

This large review combined 441 randomized trials with 33,881 patients to measure how many people show a clear response to psychotherapy across eight mental disorders. Response was defined as at least a 50% reduction in symptoms from before to after treatment. Pooled response rates were modest (for example, about 42%…

Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes Psychosomatic Disorders and Their Treatments Treatment of Major Depression

The Influence of the COVID-19 Pandemic on Social Anxiety: A Systematic Review

Reuben Kindred, Glen Bates

This systematic review looked at 33 studies about social anxiety during the COVID-19 pandemic. The studies suggest social anxiety increased in the general population. Women and people with low incomes appeared more likely to report higher social anxiety. Other links to higher social anxiety included poor coping, weaker social support,…

Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes COVID-19 and Mental Health Perfectionism, Procrastination, Anxiety Studies

The Therapeutic Potential of Psychedelic-assisted Therapies for Symptom Control in Patients Diagnosed With Serious Illness: A Systematic Review

Lucas Oliveira Maia, Yvan Beaussant, Ana Cláudia Mesquita Garcia

This paper looked at 20 clinical trials to see whether therapies that use psychedelic drugs together with talking therapy can help people who have serious, life‑limiting illnesses. The review found that these therapies often helped with psychological and spiritual problems like anxiety, low mood, and fear of dying. The drugs…

Chemical synthesis and alkaloids Complementary and Alternative Medicine Studies Psychedelics and Drug Studies Ketamine LSD

The Effect of Walking on Depressive and Anxiety Symptoms: Systematic Review and Meta-Analysis

Zijun Xu

This systematic review pooled 75 randomized trials with 8,636 people to see if walking changes symptoms of depression and anxiety. In adults, walking reduced depressive symptoms (SMD −0.591, 95% CI −0.778 to −0.403, P

Climate Change and Health Impacts Occupational Therapy Practice and Research Urban Green Space and Health
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