A 2026 multi-university survey involving 650 Saudi medical students found that 30% met a threshold for clinically significant health anxiety, with higher adjusted odds among female students, rural students, private-university students, and students with psychiatric history.1 The result is not a diagnosis of “hypochondria”; it is a screening signal that illness-focused fear may be a …
A zebrafish experiment found that one 1-hour ayahuasca exposure reversed several effects of 14 days of unpredictable chronic stress: impaired sociability, anxiety-like behavior, stress-related hyperlocomotion, elevated cortisol, and reduced whole-brain BDNF.1 The result is mechanistic animal evidence, not a clinical trial of ayahuasca for human depression or anxiety. Research Highlights 14 days of chronic stress …
A randomized crossover trial found that 150 mg caffeine did not increase subjective anxiety, interoceptive attention, or anxiety from body sensations in 29 people with panic disorder compared with 53 healthy controls.1 The result runs opposite the hypothesis, but it does not make caffeine inert: caffeine still increased physiological arousal, costly avoidance, and attention problems …
The textbook story of social anxiety disorder is broken amygdala-prefrontal regulation — an overactive threat system the prefrontal cortex can’t calm down. A 2026 effective-connectivity study of 102 adults found something different: amygdala-prefrontal connectivity didn’t differ between social anxiety patients and controls, but connectivity between prefrontal regions did, particularly involving the pre-supplementary motor area.1 Research …
A 327-person eye-tracking study found that anxiety disorders carried a hyper-scanning and hyper-pursuit signature, separating anxiety patients from healthy controls with AUC 0.82.1 The same eye-movement data separated anxiety from depression poorly, so the result is better read as a behavioral arousal marker than as a ready diagnostic test. Research Highlights Anxiety vs controls separated …
A 2026 rat study found that activating PACAP signaling in the lateral septum amplified stress-hormone release and anxiety-like behavior, while blocking endogenous PACAP receptors produced an anxiolytic pattern.1 The result makes the lateral septum look less like a passive relay and more like a stress-reactivity node in the PACAP pathway. Research Highlights Stress hormones rose: …
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 …