TL;DR: A 2026 rat study in Neuropsychopharmacology found that PACAP/PAC1 signaling in the lateral septum changed forced-swim coping, ACTH stress-hormone release, open-arm exploration, and grooming behavior. Key Findings Stress changed PACAP signals by brain region: Acute swim stress increased PACAP mRNA in the lateral septum, BNST, and basolateral amygdala, while chronic variable mild stress reduced …
TL;DR: A 2026 case-series study in Translational Psychiatry tested delayed-release oral acetate from apple cider vinegar capsules in 11 young adults taking psychotropic medications and found high adherence, no product-related adverse events, microbiome shifts, and metabolic improvement in 6 participants, but the uncontrolled design means the findings need placebo-controlled testing. Key Findings 11 completers: The …
TL;DR: A 2026 study in The British Journal of Psychiatry found that people with anxiety disorders showed hyper-scanning during neutral image viewing and hyper-pursuit during moving-dot tracking, suggesting that eye-tracking could capture measurable patterns of anxiety-related vigilance. Key Findings 307-person sample: Researchers compared 91 patients with anxiety disorders, 118 with depressive disorders, and 98 healthy …
TL;DR: A 2026 randomized feasibility trial in JMIR Mental Health found both a structured AI therapy chatbot and ChatGPT reduced PHQ-9 depression scores versus assessment-only control, but neither AI condition improved anxiety significantly or beat the other. Key Findings PHQ-9 depression scores fell: The Patient Health Questionnaire-9 (PHQ-9), a depression-symptom scale, improved more with AI …
TL;DR: A 2026 study in Neuropsychopharmacology found that reward uncertainty, measured with functional MRI (fMRI), a brain-scan method, engaged different adolescent brain networks during waiting for a possible reward versus learning the outcome, with anxiety and anhedonia tied to different parts of that response. Key Findings 84 adolescents were scanned: The sample included psychotropic-medication-free youth …
TL;DR: A 2026 study in JAMA Network Open found that a therapy built to restore reward and positive emotion outperformed a matched negative-affect therapy for adults with depression, anxiety, and severely low positive affect. Key Findings PAT beat the matched therapy: Positive Affect Treatment improved the composite clinical-status outcome more than Negative Affect Treatment (d …
TL;DR: A 2026 rat study in Psychopharmacology found that THC exposure during late adolescence left adult animals with elevated anxiety-like behavior and impaired object-recognition and spatial-memory performance after a drug-free recovery period. Key Findings Adolescent THC exposure produced lasting anxiety-like behavior in adulthood: Rats given THC (5 mg/kg/day) from postnatal day 42 to 62 (late …
Cannabinoids Had Weak Evidence for Mental Disorders TL;DR: A Lancet Psychiatry review of randomized trials found little support for routine cannabinoid treatment in common mental disorders, despite possible weak signals in a few narrower conditions. Key Findings 54 randomized controlled trials were reviewed: The analysis covered 2,477 participants across mental disorders and substance-use disorders. Routine …
How Astrocytes Help the Amygdala Store Fear Memories TL;DR: Amygdala astrocytes were not passive support cells: their calcium signals tracked learned fear states and were required for neuronal fear-memory representations in mice. Key Findings In vivo BLA imaging across multiple mouse cohorts: The team combined astrocyte and neuronal calcium imaging, electrophysiology, and circuit manipulations in …
150 mg Caffeine Did Not Trigger Panic Disorder Anxiety TL;DR: A normal coffee-sized caffeine dose did not trigger a subjective anxiety surge in panic disorder, but it did make people more physiologically aroused, more avoidant, and more distracted by bodily sensations. Key Findings 150 mg did not raise subjective anxiety: The primary outcome did not …
