TL;DR: A 2026 medRxiv preprint found that pupil dilation measured inside a virtual reality (VR) headset increased as working-memory load rose in healthy adults, was reproducible 60–90 days later in 33 returnees, and was smaller under the highest load in cognitively impaired patient cohorts than in 81 healthy controls. Key Findings Forty-three healthy adults completed …
TL;DR: A 2026 mouse study in Nature Communications reported that 10 daily bouts of optogenetic dentate-gyrus stimulation produced weeks-long changes in chromatin, nuclear structure, behavior, and spatial coding, while Cyclin B deletion weakened several effects; this ECT-inspired model does not establish how electroconvulsive therapy works in people. Key Findings Ten stimulation sessions produced the durable …
TL;DR: A 2026 randomized study in Psychological Medicine reported that 7–10 days of prucalopride improved word-learning recall and working-memory response speed versus placebo in adults with remitted recurrent depression, but the 49-person analysis did not test durability, daily functioning, or relapse prevention. Key Findings Short randomized exposure: Researchers analyzed 49 adults ages 18–40 after 7–10 …
TL;DR: A 2026 Phase 2 trial in The British Journal of Psychiatry found that 10 mg emestedastat did not improve attention and working memory after six weeks in adults with major depressive disorder and objectively measured cognitive impairment. A nominal depression-score difference appeared four weeks after treatment ended, but it was secondary, unadjusted for multiple …
TL;DR: A 2026 study in PLOS One found that emergency call takers and dispatchers who used more negatively valenced words when describing a stressful work event reported higher depression and anxiety symptoms, while arousal-related language did not predict distress. Key Findings 106 emergency communications workers described a stressful work-related event and completed the DASS-21, a …
TL;DR: Major depressive disorder and vitiligo may share immune-inflammatory gene signatures. In PLOS One in 2026, the analysis frames MAPK14 as a preliminary candidate marker that still needs clinical and laboratory validation. Key Findings Two public disease datasets were combined: The analysis used 128 major-depression blood samples and 64 controls from GEO, plus a small …
TL;DR: A 2026 review in Annals of Medicine argues that circadian rhythm disruption in major depressive disorder (MDD) reaches beyond poor sleep, linking clock-gene variation, sleep-wake timing, stress-hormone rhythms, melatonin signaling, and chronotherapy targets. Key Findings 264 million affected: The review frames MDD as a leading global disability cause affecting more than 264 million people. …
TL;DR: A 2026 medRxiv preprint used functional MRI (fMRI) and complex harmonics decomposition to study mindfulness-based cognitive therapy in 80 people with major depressive disorder, reporting post-treatment changes in whole-brain manifolds during rumination. Key Findings 80-patient trial sample: The preprint analyzed fMRI data from a randomized controlled trial in major depressive disorder. MBCT plus TAU: …
TL;DR: A 2026 systematic review and meta-analysis in Archives of Women’s Mental Health linked prenatal active tobacco smoking with higher odds of postpartum depression, while secondhand smoke and electronic nicotine-product estimates were not statistically clear. Key Findings 29-study review: Researchers included 29 studies in the systematic review and 26 studies in the meta-analysis. 15% pooled …
TL;DR: A 2026 case-control study in Psychological Medicine linked major depressive disorder to faster blood-based transcriptomic aging and found that right-insula brain changes partly explained the depression association. Key Findings Transcriptomic aging was faster in depression: 141 people with major depressive disorder showed higher blood RNA-based aging acceleration than 134 healthy controls. The result strengthened …
