Older South Koreans with cognitive impairment had higher depression scores when their care came mainly from public caregivers or a mixed group of helpers rather than their adult children. A 2026 analysis of national survey data on 537 adults aged 65 and older found the link after adjusting for health, daily function and income.1 Research …
A 2026 German-Austrian cohort analysis found that people with schizophrenia who were taking quetiapine scored modestly higher on demanding working-memory tests than sex- and age-matched patients who were not, with the largest gap at doses of 300 mg a day or less.1 Because patients were not randomized to quetiapine, this is an association; the advantage …
A 2026 PROTECT study involving 174 older adults found that self-administered fingerprick p-tau217 correlated with episodic memory (r = 0.299, p < 0.001) and GFAP correlated with working memory (r = 0.183, p = 0.034), supporting remote Alzheimer's risk triage rather than a stand-alone dementia diagnosis. Research Highlights Fingerprick sampling reached 77% completion: 174 of …
A 2026 neuroscience review argues that chemotherapy-induced peripheral neurotoxicity should not be treated as a purely peripheral nerve problem: CIPN affects 70-90% of patients during chemotherapy, persists chronically in 20-30% of survivors, and may interact with central sensitization, pain networks, mood, sleep, and chemobrain.1 The strongest claim is mechanistic connection, not proof that neuropathy alone …
A 2026 cross-sectional study of 519 older adults with first-episode depression found that the NOS3 rs1799983 TT genotype was independently associated with cognitive impairment, adjusted OR 1.720 (95% CI 1.027-2.882).1 The result is strongest as a vascular-inflammation clue, not as a ready clinical genetic test. Research Highlights TT genotype carried the headline signal: in multivariable …
A 2026 cross-sectional schizophrenia study found no meaningful association between antipsychotic dose and Montreal Cognitive Assessment (MoCA) performance in young, clinically stable outpatients. Cognitive scores related more strongly to symptom burden, illness duration, education, and age at diagnosis than to daily or 1-year cumulative antipsychotic exposure.1 Research Highlights Daily dose was not linked to MoCA: …
A 2026 medRxiv meta-analysis of 27 trials found that transcranial direct current stimulation added to cognitive training improved global cognition immediately after treatment by SMD 0.36 compared with cognitive training alone.1 The signal was small, short-term, and rated very low certainty, so it is not evidence that tDCS is a durable cognitive-rehabilitation shortcut. Research Highlights …