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Subcortical Connectivity Differs in Schizophrenia, Bipolar, Depression

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A 2026 resting-state fMRI study of 800 adults found intra-thalamic hypoconnectivity across schizophrenia, bipolar disorder, and major depression, but schizophrenia showed far broader subcortical dysconnectivity than bipolar disorder or depression.1 The calibrated read is that these diagnoses may share a thalamic vulnerability while diverging in striatal and limbic circuitry. Research Highlights Shared thalamic deficit: In …

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Early Mental Illness Severity Tracks Genetics and Brain Volume in PRONIA

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A 2026 PRONIA preprint involving 727 discovery-sample participants found that early mental illness severity cut across psychosis risk, recent psychosis, and recent depression: groups with higher symptom severity also had poorer functioning, higher schizophrenia and depression polygenic risk, and lower gray matter volume. Research Highlights Severity crossed diagnostic labels: Ye et al. stratified 727 participants …

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Depression Fatigue Linked to Higher ATP Brain Energy Turnover

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A 25-person pilot study of young adults found an ATP fatigue pattern that was directionally reversed from the simple “low brain energy” story: the depression group had higher visual-cortex ATP production metrics than healthy controls, while fatigue severity correlated with ATPase production rate, r = 0.73, p = 0.006.1 The cleaner interpretation is compensatory strain, …

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Subcallosal Cingulate DBS Biomarker Predicted Depression Recovery at 72%

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A 2026 medRxiv preprint reported that an at-home subcallosal cingulate cortex deep brain stimulation (SCC DBS) recording system could track stable recovery in severe treatment-resistant depression: in 7 analyzable patients, the local-field-potential biomarker predicted weekly recovery states with 0.72 ± 0.16 accuracy.1 The useful claim is not that brain recordings can diagnose depression broadly; it …

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Web-Based Exercise Reduced Postmenopause Depression and Sleep Scores

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A 2026 randomized trial in early postmenopausal women found that 8 weeks of app-based combined aerobic and resistance exercise reduced Beck Depression Inventory scores by 7.30 points, compared with 2.20 points after education-only control and 5.65 points after face-to-face exercise. A structured home program delivered through a mobile platform improved depression, fatigue, sleep quality, and …

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Low CALLY Index Predicted Mortality in Adults With Depression Symptoms

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A 2026 NHANES mortality analysis found that adults with PHQ-9 depressive symptoms had lower long-term all-cause mortality when their CALLY index was higher: in the fully adjusted model, each 1-unit higher log-CALLY value carried a hazard ratio of 0.59, with a 95% confidence interval from 0.51 to 0.68.1 The useful interpretation is prognostic, not therapeutic: …

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Treatment-Resistant Depression in Pakistan: 34% TRD, 86% Polypharmacy

MHD featured image for treatment-resistant depression, polypharmacy, and CYP2C19 findings in Pakistan.

A 2026 DIVERGE analysis of 3,677 antidepressant-exposed patients with major depressive disorder in Pakistan classified 34% as treatment resistant, while 86% received psychotropic polypharmacy and only 6% received psychotherapy.1 The CYP2C19 signal is real enough to study prospectively, but the main treatment-system finding is medication stacking in a setting where psychological care was rare. Research …

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