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PGx Testing Found Actionable Genotypes in 30% of Veterans

MHD featured image for pharmacogenomic testing in veteran depression and antidepressant polypharmacy.

A 12-week randomized pilot trial in 60 Veterans with depression and psychiatric polypharmacy found that 30% had an actionable antidepressant gene-drug interaction, but immediate access to pharmacogenomic results did not clearly change prescribing or Patient Health Questionnaire-9 depression scores compared with delayed access.1 Research Highlights Actionable PGx results were common: 18 of 60 Veterans, or …

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Resistance Exercise Linked to Lower Depression and Anxiety in Korean Adults

A 2026 nationwide Korean analysis found that resistance exercise was associated with lower depression and anxiety scores after propensity score matching, while aerobic exercise alone was not significantly associated with either outcome. The result favors adding weights, bands, machines, or body-weight strength work to mental-health exercise advice without assuming that lifting caused the lower symptom …

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Copy Number Variants Did Not Moderate ADHD or Autism Outcomes in ALSPAC

Photoreal illustration of DNA strands and developmental timeline overlaid on a schematic young adult, conveying genetic moderation of childhood neurodevelopmental outcomes.

A 2026 ALSPAC analysis tested a narrow claim behind routine genetic screening for childhood attention-deficit/hyperactivity disorder (ADHD) and autism spectrum disorder (ASD): whether rare copy number variants (CNVs; deleted or duplicated DNA segments) make young-adult outcomes worse than ADHD/ASD status alone would predict. In 8,414 people with usable CNV data, ADHD and ASD predicted worse …

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Anxious Depression fMRI Meta-Analysis Finds Left Temporal Activation

Editorial brain-map card for anxious depression with highlighted limbic and prefrontal regions from an earlier draft framing.

A 2026 fMRI meta-analysis of 11 studies found a narrow anxious-depression signal: 829 anxious-depression patients differed from 681 non-anxious MDD patients in left middle temporal gyrus activation (SDM-Z = 2.046, p = 0.020), while healthy-control contrasts centered on the anterior commissure and right middle frontal gyrus. The calibrated interpretation is not “amygdala and insula hyperactivity …

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Teen Anxiety and Anhedonia Split Reward-Uncertainty fMRI

Photoreal illustration of adolescent brain regions with overlapping reward and default-mode network glow, conveying uncertainty processing.

A 2026 fMRI study of 84 medication-free adolescents found that reward uncertainty had its own phase-specific brain pattern: anxiety, depression, and anhedonia separated across different task phases and brain systems.1 The clearest clinical split was narrow but useful: anxiety tracked blunted striatum/thalamus activation during uncertain non-reward expectancy, while depression and anhedonia tracked higher visual/default-network activation …

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Chronic Pain Plus Depression Alters Brain Structure

Photoreal illustration of brain regions affected by overlapping pain and depression networks, conveying comorbid neural signature.

A 2026 UK Biobank MRI preprint involving 71,214 adults found that chronic pain plus current depression had a structural brain profile that was more than chronic pain plus depression pasted together. The 1,377-person comorbid group showed widespread lower cortical volume, lower bilateral thalamic and hippocampal volume, lower left accumbens volume, and broad white-matter microstructure differences …

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