Mental Health Brain Biomarker Studies Were Mostly Small and Cross-Sectional

Mental Health Brain Biomarker Studies Were Mostly Small and Cross-Sectional

TL;DR: A 2026 review in BMC Psychiatry found 441 primary MRI and electroencephalogram (EEG), a scalp recording of brain electrical activity, mental-health biomarker studies, but most were small, cross-sectional, and concentrated in depression, making routine clinical use premature. Key Findings 58,824 records screened: Researchers searched MEDLINE and Embase from 2010 to September 2023, then mapped …

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Ten-Minute Digital Meditation Reduced Anxiety Symptoms

Ten-Minute Digital Meditation Reduced Anxiety Symptoms

TL;DR: A 2026 randomized-trial preprint in medRxiv reported that 10 minutes of daily digital meditation reduced anxiety and mind wandering, with the largest gains in people who started with higher symptom burden. Key Findings Ten daily minutes reduced anxiety: Meditation-naive adults were assigned to immediate training or waitlist control in a delayed-intervention design. Low-dose protocol: …

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Higher Temperatures Linked to Police-Violence Death Risk

Higher Temperatures Linked to Police-Violence Death Risk

TL;DR: A county-level 2026 study in PLOS One found that warmer monthly temperatures in the United States from 2013 to 2024 were associated with higher police-violence death rates, with projected additional deaths by 2050 under high-emissions climate scenarios. Key Findings 2013-2024 county-level data: Researchers linked U.S. police-violence deaths with monthly temperature and precipitation data across …

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Substance Use Disorder Shared Reward-Circuit fMRI Abnormalities

Substance Use Disorder Shared Reward-Circuit fMRI Abnormalities

TL;DR: A 2025 systematic review in Translational Psychiatry found that substance use disorder was associated with recurring resting-state functional MRI (rs-fMRI), a scan of spontaneous brain-network communication, abnormalities in reward and self-control circuits across 53 studies. Key Findings 53-study meta-analysis: Researchers pooled whole-brain rs-fMRI studies covering 1,700 people with substance use disorder and 1,792 healthy …

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Sensation Seeking Was Linked to Restraint and Overeating in Adolescents

Sensation Seeking Was Linked to Restraint and Overeating in Adolescents

TL;DR: A 2026 study in the Journal of Eating Disorders found that higher sensation seeking, a personality trait involving pursuit of novel or intense experiences, was linked to more restraint and overeating in 400 German adolescents, with stronger disordered-eating links in teens with higher BMI, hyperactivity/inattention, emotional symptoms, or peer problems. Key Findings 400 adolescents: …

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Childhood Psychological Abuse Predicted Lower Adult Relationship Satisfaction Through Reduced Belongingness

Childhood Psychological Abuse Predicted Lower Adult Relationship Satisfaction Through Reduced Belongingness

TL;DR: A 2026 longitudinal study in Personality and Individual Differences followed 346 Turkish young adults across two survey waves three months apart and found that childhood psychological abuse predicted lower adult relationship satisfaction, with a reduced sense of belonging acting as the statistical mediator linking the early adversity to the later romantic outcome. Key Findings …

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AI Chatbot Use for Companionship Predicted Higher Emotional Isolation Four Months Later in 12-Month Cross-Lagged Study

AI Chatbot Use for Companionship Predicted Higher Emotional Isolation Four Months Later in 12-Month Cross-Lagged Study

TL;DR: A 12-month four-wave longitudinal study in Psychological Science (N=2,149 adults across the UK, US, Canada, and Australia) found that feeling more emotionally isolated predicted higher chatbot use four months later — and that higher chatbot use, in turn, predicted further increases in emotional isolation at the next wave. Key Findings Bidirectional link with emotional …

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First 25 mg Psilocybin Dose Increased EEG Entropy and Predicted Well-Being

First 25 mg Psilocybin Dose Increased EEG Entropy and Predicted Well-Being

TL;DR: A 2026 exploratory study in Nature Communications found that a first 25 mg psilocybin dose in 28 psychedelic-naive adults increased electroencephalography (EEG), a scalp recording of brain electrical activity, entropy during the acute session and that entropy predicted one-month well-being change. Key Findings 28 psychedelic-naive adults: Participants received 1 mg psilocybin as a low-dose …

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Inflammation Markers Did Not Track Depression or Alcohol Use

Inflammation Markers Did Not Track Depression or Alcohol Use

TL;DR: A 2026 study in Brain, Behavior, & Immunity – Health found that depression symptoms, alcohol use, and alcohol use disorder (AUD) symptoms were not associated with C-reactive protein (CRP), a blood inflammation marker, or a pro-inflammatory cytokine index in 972 community adults, and twin analyses suggested familial confounding explained several cytokine-AUD links. Key Findings …

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Monocyte Epigenetic Aging Tracked Non-Somatic Depression in Women With and Without HIV

Monocyte Epigenetic Aging Tracked Non-Somatic Depression in Women With and Without HIV

TL;DR: A 2026 study in The Journals of Gerontology, Series A: Biological Sciences and Medical Sciences measured a monocyte-specific DNA methylation clock (MonoDNAmAge) in 440 women with and without HIV, and found that accelerated monocyte epigenetic aging was specifically linked to non-somatic depressive symptoms (anhedonia, hopelessness, cognitive impacts) but not to broader depression severity, supporting …

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