TL;DR: A 2026 study in Environmental Science & Technology found that male guppies exposed for 11 days to environmentally relevant amitriptyline, a tricyclic antidepressant detected in waterways, made more spatial-learning errors in a maze while females were largely unaffected. Key Findings 170-fish learning test: Researchers tested wild-caught male and female guppies across 12 maze trials …
TL;DR: A 2026 medRxiv review found that mental-health AI agents are moving quickly toward large-language-model chatbots, but most systems still rely on text self-report, narrow depression/anxiety/suicide use cases, and offline tests rather than prospective clinician or patient trials. Key Findings More than 300 recent papers were reviewed: Researchers audited mental-health AI agent systems from 2023 …
TL;DR: A 2026 study in Biological Psychiatry: Global Open Science found that trauma-exposed adolescents, especially those with higher posttraumatic stress symptoms, showed disrupted parent-cued fear extinction across skin-conductance, behavioral-learning, and functional MRI (fMRI) measures. Key Findings 87 dyads entered the extinction task: The analysis included typically developing adolescents and trauma-exposed adolescents with lower or higher …
TL;DR: A 2026 study in Aging Cell found that fasting and caloric restriction activated ADIOL, a steroid hormone, through an NHR-91-kynurenic acid pathway that improved several healthspan measures in worms without extending lifespan. Key Findings ADIOL was the central hormone: 5-androstene-3beta,17beta-diol (ADIOL) linked nutrient restriction to healthier function in C. elegans worms. NHR-91 was required: …
TL;DR: A 2026 medRxiv preprint from the ENIGMA Addiction Working Group used structural MRI from 2,782 people with substance use disorder (SUD) and 1,951 controls and reported that addiction-related brain differences followed cortical network hubs and neurotransmitter receptor maps. Key Findings 4,733-person MRI sample: Researchers compared 2,782 people with SUD against 1,951 controls across 51 …
TL;DR: A 2026 study in Psychological Medicine found that people with schizophrenia spectrum disorders and higher avolition or moderate-to-high delusion severity appeared to improve more after virtual reality cognitive behavioral therapy for psychosis (VR-CBTp), while lower delusion severity favored standard CBTp. Key Findings FaceYourFears dataset: The exploratory moderator study used trial data from 254 participants, …
TL;DR: A 2026 rat and cell study in Journal of Materials Science: Materials in Medicine reported that an engineered VIN nanosystem shifted microglia toward an anti-inflammatory state and reduced ischemic-stroke infarct measures in MCAO rats. Key Findings CXCR4 increased 1.75-fold: Fe3O4 nanoparticle induction raised CXCR4 expression in bone-marrow mesenchymal stem cell membranes. A151 loading reached …
TL;DR: A 2026 preprint in medRxiv found that under-mattress sleep sensors associated lower nighttime respiratory rate and more unstable nighttime movement with higher odds of next-day agitation in dementia, while the same features did not predict how severe agitation became once it occurred. Key Findings 55 dementia patients supplied the main dataset: Researchers matched 333 …
TL;DR: A 2026 preprint on medRxiv tested transcutaneous vagus nerve stimulation (tVNS), a noninvasive ear-based stimulation method, during a grip-strength reward task and found that people with severe depressive symptoms made more efficient effort choices under active stimulation than under sham. Key Findings Reward-effort task included 98 participants: The analysis included 53 people with major …
TL;DR: A 2026 machine-learning study in PLOS One used student mental-health survey features to test an interpretable FT-Transformer plus LSTM model, which reached 95% accuracy for low, medium, and high risk prediction in a public dataset. Key Findings 95% accuracy: the full interpretable FT-Transformer plus LSTM model outperformed AdaBoost, SVM, logistic regression, Random Forest, LSTM, …
