Depression

Kynurenine Metabolites Were Higher in Inflammatory Depression

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Kynurenine Metabolites Were Higher in Inflammatory Depression

TL;DR: A 2026 biomarker analysis in Brain, Behavior, & Immunity – Health across antidepressant trials found that kynurenine pathway metabolites were elevated in inflammatory depression compared with non-inflammatory depression and healthy controls, while omega-3 polyunsaturated fatty acid treatment reduced several kynurenine pathway metabolites. Key Findings Study type: a combined analysis of two depression trials testing …

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Household Pesticide Exposure Was Associated With Depression Risk

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Household Pesticide Exposure Was Associated With Depression Risk

TL;DR: A 2026 cross-sectional NHANES analysis in Depression and Anxiety found that urinary pyrethroid metabolite 3-PBA showed a dose-dependent association with depression, while female participants showed stronger associations for 3-PBA and 4F-3-PBA, while males showed sensitivity to DCBA in mixture models. Key Findings Study type: a survey-weighted analysis using self-reported pesticide exposure and urinary pesticide …

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Home DBS Recordings Tracked Depression Recovery Biomarkers

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Home DBS Recordings Tracked Depression Recovery Biomarkers

TL;DR: A 2026 preprint deep brain stimulation biomarker study in medRxiv found that home-recorded electrophysiology biomarkers tracked stable depression recovery during SCC DBS, while the biomarkers helped distinguish recovery from nonspecific symptom fluctuations and external distress. Key Findings Study type: a home-recording study using bidirectional deep brain stimulation devices to monitor electrophysiology during depression recovery. …

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TRD Brain Networks Decoupled Structure From Function

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TRD Brain Networks Decoupled Structure From Function

TL;DR: A 2026 study in npj Mental Health Research found that a 308-person multimodal MRI study found treatment-resistant depression carried a distinct structure-function decoupling pattern, and machine-learning models separated TRD from non-resistant depression with AUCs up to 0.95. Key Findings 72 TRD patients analyzed: The final sample included 72 patients with treatment-resistant depression, 152 with …

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AI Therapy Chatbot Reduced PHQ-9 Depression Scores in Pilot Trial

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AI Therapy Chatbot Reduced PHQ-9 Depression Scores in Pilot Trial

TL;DR: A 2026 randomized feasibility trial in JMIR Mental Health found both a structured AI therapy chatbot and ChatGPT reduced PHQ-9 depression scores versus assessment-only control, but neither AI condition improved anxiety significantly or beat the other. Key Findings PHQ-9 depression scores fell: The Patient Health Questionnaire-9 (PHQ-9), a depression-symptom scale, improved more with AI …

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Reward Uncertainty Mapped Mood and Anxiety Signals in Teen fMRI Study

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Reward Uncertainty Mapped Mood and Anxiety Signals in Teen fMRI Study

TL;DR: A 2026 study in Neuropsychopharmacology found that reward uncertainty, measured with functional MRI (fMRI), a brain-scan method, engaged different adolescent brain networks during waiting for a possible reward versus learning the outcome, with anxiety and anhedonia tied to different parts of that response. Key Findings 84 adolescents were scanned: The sample included psychotropic-medication-free youth …

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Positive Affect Treatment Outperformed Negative Affect Therapy

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Positive Affect Treatment Outperformed Negative Affect Therapy

TL;DR: A 2026 study in JAMA Network Open found that a therapy built to restore reward and positive emotion outperformed a matched negative-affect therapy for adults with depression, anxiety, and severely low positive affect. Key Findings PAT beat the matched therapy: Positive Affect Treatment improved the composite clinical-status outcome more than Negative Affect Treatment (d …

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Why Serious Mental Illness Labels Change So Often

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Why Serious Mental Illness Labels Change So Often

TL;DR: A 2026 study in The British Journal of Psychiatry found that serious mental illness labels shifted often in real-world psychiatric records: 64% of patients with schizophrenia, bipolar disorder, or severe major depression received multiple diagnoses over time. Key Findings Diagnosis switching was the norm: The cohort covered records from 2005 to 2022 at a …

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Chronic Pain With Depression Had a Distinct Brain Structure Profile

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Chronic Pain With Depression Had a Distinct Brain Structure Profile

TL;DR: A 2026 preprint UK Biobank neuroimaging study in medRxiv found that the comorbidity group showed widespread lower cortical volume, subcortical differences, and white matter microstructure alterations, while several alterations appeared unique to the chronic pain-depression comorbidity group. Key Findings Evidence map: a cross-sectional neuroimaging analysis comparing comorbid chronic pain and depression with pain-only, depression-only, …

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Antidepressant Discontinuation Did Not Shift Facial Emotion Recognition

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Antidepressant Discontinuation Did Not Shift Facial Emotion Recognition

TL;DR: A 2026 study in Psychological Medicine found that stopping maintenance antidepressants did not meaningfully change facial emotion recognition over 12 or 52 weeks in adults with recurrent depression who were currently well. Key Findings Trial sample: The analysis came from 478 adults in a randomized antidepressant relapse-prevention trial. Emotion task: Participants classified morphed faces …

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