Skip to content

Depression research published in 2026

Page 2 of 37: studies 21 to 40 of 725, newest first. Back to the depression overview

Studies

LSD treatment affects working memory-related brain function in patients with major depressive disorder

Translational Psychiatry October 8, 2026 Friederike Holze, Kristian Larsen, Brice Ozenne et al.

Abstract Classic psychedelics, including lysergic acid diethylamide (LSD), are currently under investigation for the treatment of major depressive disorder (MDD). Cognitive dysfunction is common in MDD, but effects of psychedelic treatment on cognitive brain function, measured by magnetic resonance imaging, are sparsely reported. The present study investigated effects of LSD treatment on...

Insomnia and anxiety exhibit distinct short-term associations following ketamine in treatment-resistant depression

Translational Psychiatry October 6, 2026 Nadia S. Hejazi, Mina Kheirkhah, Robin Chholak et al.

Insomnia and anxiety frequently co-occur with treatment-resistant depression (TRD). This study examined short-term changes in depression, anxiety, and insomnia symptoms post-ketamine in TRD and their inter-relationships. Seventy-one patients with TRD were assessed at baseline and 24 h after intravenous ketamine (0.5 mg/kg). Depression, anxiety, and insomnia were measured using the...

Multiband ALFF in patients with major depressive disorder treated with esketamine and sertraline: A preliminary study

Brain Research Bulletin October 6, 2026 Ziyi Hua, Yongqiang Shu, Li Li et al.

INTRODUCTION: This study investigated changes in multiband amplitude of low-frequency fluctuations in patients with major depressive disorder following a 2-week combination treatment regimen of esketamine and sertraline, and examined the associations between ALFF changes and clinical symptom improvement. METHODS: Forty patients with major depressive disorder (MDD) received esketamine (0.25...

Psilocybin use, mental health treatment utilization, and unmet treatment need among US individuals with depression.

Psychological Medicine October 6, 2026 Avery Chan Eun, Kevin H. Yang, Joseph J Palamar

Psilocybin use has increased in the US alongside promising therapeutic potential for depression, raising concerns that individuals may forgo conventional mental health treatment for unsupervised psilocybin use. However, no nationally representative studies have examined whether psilocybin use is associated with differential treatment utilization or perceived unmet need for mental health care...

Re-orienting secular psychology towards psycho-spirituality: Islamic epistemology, heart(felt) healing, and depression as a soul disorder

Cogent Arts and Humanities October 5, 2026 Khaled Al-Kassimi, Layal Hmaidi

Mainstream secular psychology is grounded in an epistemological framework that privileges reason while largely excluding revelation, thereby limiting its capacity to engage the spiritual dimensions of contemporary mental health and socio-political crises. Yet recent decades have witnessed growing scholarly and clinical interest in non-secular epistemologies that affirm the spiritual essence of...

Therapists’ Perspectives on the Psychotherapeutic Support in Psilocybin Treatment for Major Depressive Disorder: Insights from a Randomized Controlled Trial

Research Square October 5, 2026 Anette Kjellgren, Johan Lundberg, Hampus Yngwe et al. preprint

Abstract Psilocybin treatment has emerged as a promising intervention for Major Depressive Disorder (MDD). However, the contribution of psychotherapeutic support to treatment outcomes remains unclear. This study explored therapists' descriptions of their work during a randomized, double-blind, placebo-controlled psilocybin treatment phase II trial for MDD. Nine therapists participated in...

Effects of Repeated Ketamine Infusions on Suicidal Ideation in Treatment-Resistant Depression and Associated Changes in Selected Plasma Biomarkers

Pharmacopsychiatry October 2, 2026 Masami Murao, Daiki Setoyama, Yasuyuki Matsumoto et al.

Abstract This study investigated the antisuicidal effects of repeated intravenous ketamine in patients with treatment-resistant depression and explored associations between suicidal ideation and temporal changes in selected plasma biomarkers to identify potential biomarkers. This secondary analysis of an open-label trial included outpatients with treatment-resistant depression who received four...

Direct and Indirect Associations Between War‐Related Nightmares, Anxiety‐Depression Symptoms, and Somatization in a Sample of Displaced Lebanese Adults During the 2024–2025 Lebanese War: A Cross‐Sectional Study

Health science reports October 1, 2026 Naya Saadeh, Elie Atallah, Mirna A. Fawaz et al.

ABSTRACT Background and Aims Somatization, the physical manifestation of emotional and psychological distress, is a prevalent issue in populations exposed to war and trauma. War‐related nightmares are common among displaced individuals and are linked to depression, anxiety, and somatization. Yet, the indirect role of depression‐anxiety in the association between war‐related nightmares and...

I don’t feel like myself: mapping dissociative symptoms across depression severity in a clinical population

Current Psychology October 1, 2026 Mary-Anne Kate, Benjamin Dixon, David L. Hegarty et al.

Abstract: This study examined the relationship between depression and dissociation by assessing how specific dissociative symptoms vary with depression severity in a large Australian clinical sample. A total of 5,384 adults receiving mental health care completed the Depression Anxiety Stress Scales-21 (DASS-21) and the Multidimensional Inventory of Dissociation-60 (MID-60). Analyses included...

Durability of antidepressant effects following ketamine based interventions in adults with treatment-resistant depression: A systematic review of randomized controlled trials

International Journal of Pharmaceutical and Clinical Research October 1, 2026 H Gayathri, J Nivedhya, K Purushothama Reddy et al.

Aim: To assess the effectiveness of ketamine-based treatment for adults with treatment-resistant depression in terms of the persistence of antidepressant responses or remission after treatment discontinuation. Data Sources: PubMed/MEDLINE database search was performed to select randomized clinical trials that assessed the effect of ketamine interventions on TRD in adults. Study Selection: The...

Psilocybin for Anhedonia in Unipolar and Bipolar Depression: A Systematic Review of Clinical and Preclinical Evidence

Journal of Psychiatric Research October 1, 2026 Erica Kaczmarek, Sabrina Wong, Noah Chisamore et al.

Background Anhedonia is a debilitating core feature of mood disorders, and is associated with significant functional impairment and poor quality of life. Psilocybin has recently emerged as a novel antidepressant treatment in MDD, however, its effects on anhedonia specifically have yet to be systematically reviewed. This review evaluates available clinical and pre-clinical research, exploring...

Esketamine and Acceptance and Commitment Therapy (ACT) for Treatment-Resistant Depression: An Intervention-Development Framework and Treatment Manual

Psychedelics October 1, 2026 David S. Mathai, Brian Pilecki, Hadi Zaki et al.

In 2019, the U.S. Food and Drug Administration (FDA) approved a patented formulation and delivery method of esketamine, the S-enantiomer of ketamine, for patients with treatment-resistant depression (TRD). While ketamine-based treatments share similarities with serotonin 2 A receptor-mediated “classic psychedelics” like psilocybin regarding subjective drug effects and stimulation of...

Connectedness as a Mechanism of Change in Psilocybin-Assisted Cognitive Behavioral Therapy for Major Depressive Disorder

Psychedelics October 1, 2026 Lorenzo Miller, Cordelia Kuiper Rauch, Keren Chen et al.

Background Psilocybin-assisted therapy has shown robust antidepressant effects among individuals with major depressive disorder (MDD); however, mechanisms of the treatment remain unclear. Depression has been associated with diminished feelings of connectedness to oneself, others, and the world, and psilocybin is thought to facilitate connectedness. This analysis of an open-label trial of...

Mystical Experiences Mediate the Effects of Psilocybin-Assisted Psychotherapy + Mindfulness-Based Stress Reduction on Trait Mindfulness and Depression Symptoms: Mechanistic Results from a Randomized Controlled Trial

Journal of Affective Disorders Reports October 1, 2026 Kevin Byrne, Madeleine Odette, Eric L Garland et al.

ABSTRACT Background Healthcare workers experienced amplified depression and burnout during COVID-19. Both Mindfulness Based Stress Reduction (MBSR) and psilocybin have been shown to reduce depressive symptoms in this population, however the psychological mechanisms by which adding psilocybin to mindfulness training improves depression and trait mindfulness remain incompletely characterized....

A Meta-Analysis of Domestic and International Studies on the Effects of Meditation Programs for Cancer Patients: Focusing on Depression, Anxiety, Pain, and Quality of Life

Korea Exercise Rehabilitation Welfare Association September 30, 2026 Do-Hyeok Jang, Sungh-Ho Hwang

This meta-analysis aimed to examine the effects of meditation-based interventions on psychological and physical outcomes in cancer patients. A total of 25 studies were included after a systematic literature search. Random-effects models were used to calculate pooled effect sizes (Hedges’ g), and meta-regression analyses were conducted to explore the moderating effects of the number of sessions,...

Mindfulness and Emotion Dysregulation across Internalizing Disorders: A trans-diagnostic comparison of MDD, OCD, and comorbidity

Clinical Psychology and Special Education September 30, 2026 R. Ghorbani, N. Vahidi, Sh. Tamannaeifar et al.

Context and relevance. Emotion regulation and mindfulness are trans-diagnostic mechanisms underlying internalizing disorders such as Obsessive-Compulsive Disorder (OCD) and Major Depressive Disorder (MDD), having a significant influence on symptoms intensity and therapeutic effectiveness. Given the biological and phenomenological intersections as well as the high comorbidity between OCD and...

Voided REM Sleep (V-REM): A Candidate Biomarker Linking Treatment-Resistant PTSD and Major Depressive Disorder

Preprints.org September 29, 2026 Mouhammad Ousmane Ndiaye preprint

A substantial proportion of patients with posttraumatic stress disorder (PTSD) and major depressive disorder (MDD) do not respond to first-line treatment. Approximately 40% of PTSD patients do not respond to first-line psychotherapy, and 30.9% of MDD patients meet criteria for treatment-resistant depression. Yet standard polysomnography in these patients frequently shows REM sleep that appears...

KETAMINE VERSUS ELECTROCONVULSIVE THERAPY FOR SEVERE TREATMENT-RESISTANT DEPRESSION: A SYSTEMATIC REVIEW AND META-ANALYSIS OF EFFICACY, SPEED OF RESPONSE, COGNITIVE OUTCOMES, AND SAFETY

The International Journal of Medical Science and Health Research September 29, 2026 Arby Shafara Sekundaputra

Introduction: Treatment-resistant depression (TRD) affects approximately one-third of patients with major depressive disorder and accounts for disproportionate disability and mortality. Electroconvulsive therapy (ECT) has long been the definitive intervention, whereas subanaesthetic intravenous ketamine has emerged as a rapid-acting alternative. Direct head-to-head evidence has accumulated...

Multimodal predictors of response to intravenous ketamine in treatment-resistant depression: toward personalized treatment in major depressive and bipolar disorders.

CNS Spectrums September 28, 2026 Magda Malewska-Kasprzak, Filip Rybakowski, Monika Dmitrzak-Weglarz

Intravenous ketamine is a rapid-acting intervention for treatment-resistant depression (TRD) in adults with major depressive disorder and bipolar disorder (BD). While efficacy is established, a comprehensive integration of clinical, neurophysiological, biomarker, metabolic, and cognitive predictors remains lacking, limiting precision CNS-targeted therapy. To synthesize recent evidence on...

Symptom-level and network analyses of ketamine treatment in treatment-resistant depression: A pooled analysis of two randomized controlled trials.

Progress in neuro-psychopharmacology & biological psychiatry September 26, 2026 Kuan-I Liu, Wei-Chen Lin, Cheng-Ta Li et al.

We examined symptom-level treatment effects and exploratory symptom networks after ketamine in treatment-resistant depression. This post hoc analysis pooled 132 participants assigned to ketamine 0.5 mg/kg or protocol-specific control (66 each) from saline-controlled 2017 and midazolam-controlled 2023 trials. Baseline- and trial-adjusted models assessed Montgomery-Åsberg Depression Rating Scale...