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Major Upper-Extremity Amputation Raised Mental Health Odds

Major upper-extremity amputation was linked to substantially higher odds of new mental-health diagnosis, antidepressant initiation, and psychotherapy claims than minor upper-extremity amputation in a matched national database study. The clearest clinical implication is early mental-health screening after major limb loss, not waiting for distress to surface months later.1 Research Highlights 2,452 matched patients were analyzed: …

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Psilocybin Reduced Fish Aggression Bursts in Rivulus Study

MHD featured image for psilocybin effects on aggression and activity in a mangrove rivulus fish model.

A 2026 study involving 32 adult mangrove rivulus fish pairs found that 3,000 µg/L waterborne psilocybin reduced movement and aggressive swimming bursts, but the result belongs in animal behavioral pharmacology, not in human aggression treatment claims.1 Research Highlights Fish movement decreased: psilocybin produced a treatment-by-time interaction for time spent moving (p = 0.006), with a …

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Dementia Caregiver Intervention Needed 24 Cultural Adaptations

A 2026 descriptive study documented 24 major cultural adaptations to the New York University Caregiver Intervention-Enhanced Support (NYUCI-ES) for Chinese and Korean American dementia caregivers. The work is not an outcomes report yet; it is a careful map of how an evidence-based caregiver intervention had to change before it could plausibly fit East Asian immigrant …

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Household Pesticide 3-PBA Linked to Depression Risk in 6,502 Adults

MHD featured image for household pesticide biomarkers and depression risk.

A 2026 NHANES analysis of 6,502 adults found that urinary 3-PBA, a pyrethroid insecticide metabolite, was modestly associated with depression risk at OR = 1.02 per 1 μg/L, while self-reported household pesticide exposure weakened after full adjustment to OR = 1.43 (95% CI 0.91 to 2.25).1 The calibrated read is biomarker signal first, causal language …

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Child and Adult Adversity Doubled Frailty in UK Biobank

Editorial card showing a life-course timeline with biological aging biomarkers, illustrating how cumulative childhood and adult adversity stack on the frailty index.

A 2026 UK Biobank analysis by Aas et al. in BMC Medicine tests the “adversity leaves a fixed biological scar” framing against five biological aging markers in 153,557 middle-aged and older adults — and the marker that moves most reliably isn’t telomere length or any metabolomic clock.1 Research Highlights 153,557-participant test: Aas et al. measured …

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Accelerated tDCS Reduced Pain in 4 of 5 Bodily Distress Disorder Cases

MHD featured image for accelerated tDCS and bodily distress disorder.

A 2026 case series of 5 adults with bodily distress disorder found mean pain scores decreased from 9.0 to 3.8 after accelerated transcranial direct current stimulation, with 4 of 5 patients achieving at least 50% pain reduction.1 The result is a feasibility signal, not proof of efficacy, because every patient knew they were receiving stimulation …

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CARES Addiction Risk Screening: 15-Stakeholder Preprint

MHD featured image for CARES addiction risk screening implementation.

A 2026 medRxiv preprint interviewed 15 health-system stakeholders about CARES, a freestanding addiction-risk screening platform, and found a clear implementation split: people wanted better substance-use prevention tools than current clinic screening, but provider burden, stigma, knowledge gaps, and medical-record liability could block uptake.1 Research Highlights Stakeholders saw a screening gap: all 15 interviewees held leadership …

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