Mental Health DailyResearch. Evidence. Perspective.Published research on sleep quality.
In a UK registry study of 130 autistic adults on prescribed cannabis, self-rated anxiety and sleep improved most in the first months and partly faded by 18 months as THC doses rose; there wa…
Read articleHigh-school students in Vietnam who slept worse reported slightly lower grades, according to a 2026 survey of 541 students in Grades 10 and 11. Shorter sleep carried most of that link, which…
Read articleHeart surgery patients who slept poorly around their operation had lower heart rate variability before surgery and on each of the next 3 days, according to a 2026 study of 95 adults in China…
Read articleA 2026 PLOS Biology study using 256-electrode EEG and 1,024 NREM2 awakenings found that immersive dreaming predicted deeper subjective sleep, beta = 0.277, while reflective thought predicted…
Read articleDreams transform waking life rather than replaying it directly. In a 2026 Communications Psychology study of 3,366 reports, dreams were more visual, spatial, social, and bizarre than waking …
Read articleSleep problems during chemotherapy include more than daytime fatigue. In a 2026 outpatient chemotherapy sample, 87% reported poor sleep quality and 61% had variable sleep timing, while measu…
Read articleA 2026 arterial spin labeling MRI study found that 34 patients with non-auditory tinnitus and cerebral venous congestion had lower corrected cerebral blood flow across multiple brain regions…
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