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College Students’ AI Dependence Linked to Academic Stress and Trust

MHD card showing a handwritten page breaking apart into glowing blue chat bubbles beside a stack of deadline papers, illustrating a survey of Chinese university writing students in which academic stress and trust in AI were linked to leaning on AI for writing.

College students who felt more academic stress and trusted AI more reported leaning harder on generative AI for their writing, according to a 2026 survey of 229 journalism students at 2 universities in China. Students with stronger AI literacy reported less dependence once other factors were taken into account.1 Research Highlights Stress had the strongest …

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Life Stress Linked to Alzheimer’s Amyloid When Insomnia Is Worse

MHD card showing a person lying awake in bed under a glowing clock, with a faint brain outline holding gold amyloid clusters above, illustrating a study in which life stress was linked to an Alzheimer's amyloid marker only in people with worse insomnia.

Among Swedish memory-clinic patients without dementia, more stressful life events were linked to a spinal-fluid sign of Alzheimer’s amyloid buildup, but only in people with moderate-to-high insomnia symptoms, according to a 2026 study.1 Research Highlights Stress and insomnia worked together: in 103 patients with spinal-fluid tests, lifetime stressful events and insomnia symptoms interacted in relation …

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Physical Activity Linked to Better Quality of Life in Teens

MHD card showing a glowing teen runner on a curved school running track at night with a thought bubble that turns a jagged stress scribble into calm arcs, illustrating a survey linking physical activity to better quality of life in teens.

In a 2026 survey of 420 middle school students in eastern China, more physically active teens reported more cognitive reappraisal (reframing stressful situations), better stress-management habits and better health-related quality of life.1 Research Highlights Activity linked to quality of life through coping scores: the researchers’ model combined proposed links through reframing stressful situations and stress-management …

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Scarcity Mindset Study Reanalyzed: Game Rules, Not Tunnel Vision, Explained the Results

MHD card with receding teal tunnel rings and a narrow spotlight falling on three gold coins beside a small target, illustrating a reanalysis finding that the scarcity tunneling effect came from game rules.

A new study reanalyzed a widely cited target-shooting experiment used to support the scarcity mindset theory. That theory says money shortages focus attention on immediate needs and make future costs easier to overlook.1 Giving players fewer or more shots changed their opportunities to score and borrow, explaining results previously attributed to narrowed attention. The findings …

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Ayahuasca Reversed Chronic Stress Markers in Zebrafish Model

MHD featured image for ayahuasca chronic-stress zebrafish cortisol and BDNF study.

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 …

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