Mental Health Daily

CoQ10 Preserved Working Memory in Drp1-Deficient Mice Through Coa6

by GLOOM

MHD featured image for CoQ10, working memory, Drp1 deficiency, Coa6, and mitochondrial respiratory-chain function.

A 2026 mouse study found that long-term CoQ10 exposure reduced working-memory errors in Purkinje-cell-specific Drp1-deficient mice, tying the behavioral rescue to Coa6 binding and support for mitochondrial respiratory-chain function.1 The result supports a narrow mechanistic CoQ10-Coa6 pathway under neuronal mitochondrial dysfunction while leaving human memory-supplement claims untested. Research Highlights Working memory improved in a mouse …

Blood microRNAs Linked to Hippocampal Atrophy in Rhineland Study

by GLOOM

MHD featured image for blood microRNA signatures and hippocampal atrophy.

A 2026 Molecular Psychiatry analysis from the Rhineland Study found that blood-derived microRNA signatures were associated with hippocampal brain structure: 6 microRNAs linked cross-sectionally to left hippocampal volume, and 5 different microRNAs linked longitudinally to hippocampal atrophy rates.1 The result is biomarker-discovery evidence for brain aging, not a ready dementia blood test. Research Highlights Baseline …

Metformin’s Brain Rap1 Pathway Controlled Glucose in Mouse Study

by GLOOM

MHD featured image for metformin, brain Rap1 signaling, hypothalamic VMH neurons, and glucose control.

A 2025 Science Advances mouse study found a more brain-dependent metformin mechanism than the usual liver-gut framing suggests: low-dose metformin lost its glucose-lowering effect when brain Rap1 signaling could not be reduced, and 36 of 47 ventromedial-hypothalamus SF1 neurons responded directly to metformin.1 Research Highlights Low-dose metformin needed brain Rap1: Control mice lowered glucose after …

Mild COVID Cognition Improved After Alpha/Delta and Omicron

by GLOOM

A 2026 longitudinal study found reassuring cognitive trajectories after mild-to-moderate COVID-19: Alpha/Delta and Omicron groups both improved by follow-up, and neither group showed persistent neuropsychological test deficits vs. population norms. Psychiatric symptoms and fatigue were also broadly similar across variants.1 Research Highlights 55 adults were assessed: 27 were infected during the Alpha/Delta era and 28 …

Under-Mattress Sensors Predict Dementia Agitation: 333-Night Cohort

by GLOOM

Stylized illustration of an under-mattress sensor connected to a clock and waveform pattern, indicating overnight respiratory and movement signals predicting next-day behavioral risk in a dementia care setting.

Daytime agitation in dementia fluctuates day-to-day, and a 2026 explanatory study from Liu et al. used contactless under-mattress sensors in 55 long-term-care residents and an external 17-person home-monitoring cohort to show that lower nocturnal respiratory rate and higher activity instability robustly predict next-day agitation occurrence — but not severity.1 Research Highlights Lower breathing rate: adjusted …

bvFTD MRI Atrophy Ratings: Left Orbitofrontal Score Predicted 3.77x Odds

by GLOOM

A 2026 behavioral-variant frontotemporal dementia MRI study found that simple visual ratings of orbitofrontal and frontoinsular brain atrophy helped separate probable from possible bvFTD, with baseline left orbitofrontal atrophy predicting 3.77-fold higher odds of probable bvFTD classification.1 Research Highlights 143 people were rated: the study included 93 probable bvFTD cases, 15 possible bvFTD cases, and …

Alcohol vs. Cannabis Cues: People Miss Marijuana Signs

by GLOOM

MHD featured image for alcohol versus cannabis intoxication cues and layperson impairment detection.

A 2026 survey of 467 University of Sydney undergraduate psychology students found that participants generated more and more accurate observable cues for alcohol intoxication than for cannabis intoxication.1 When unanswered cue fields were counted, accurate alcohol cues appeared in 63.2% of possible response slots, while accurate cannabis cues appeared in 37.3%. Research Highlights Alcohol cues …