Sleep

Researchers at the National University of Singapore’s Yong Loo Lin School of Medicine report that caffeine helped reverse sleep deprivation-related deficits in social recognition memory in laboratory mice, an effect tied to synaptic function in the hippocampal CA2 region. The findings were published in the journal Neuropsychopharmacology.

21. mai 2026 Rapportert av AI

Four detailed case studies in France have prompted calls to recognise epic dreaming as a separate sleep disorder. People affected report vivid, incessant dreams that leave them exhausted despite normal sleep patterns. Researchers say the condition may be under-recognised and distinct from other mental health issues.

A new study from Northwestern Medicine indicates that stopping eating three hours before bed and extending overnight fasting can improve blood pressure, heart rate, and blood sugar control without reducing calorie intake. Participants aligned their eating with natural sleep cycles, leading to measurable cardiometabolic benefits. The research highlights the importance of meal timing relative to sleep.

11. februar 2026 Rapportert av AI

New research from Griffith University indicates that maintaining a bedroom at 24°C (75°F) during the night can lower stress responses and improve heart efficiency for people aged 65 and older. The study highlights how heat disrupts sleep recovery, particularly amid rising nighttime temperatures due to climate change. Findings were gathered using wearable trackers and room sensors during an Australian summer.

Danish researchers report that greater recreational screen use among youth is associated with higher cardiometabolic risk — including markers such as high blood pressure and insulin resistance — with the link strongest among those who sleep less. Based on data from more than 1,000 participants, the authors and outside experts say trimming discretionary screen time and improving sleep may help protect long‑term heart health.

29. oktober 2025 Rapportert av AI

A new study reveals that lack of sleep causes the brain to perform its cleaning process while awake, leading to momentary lapses in attention. Researchers found that cerebrospinal fluid flushes occur just before focus is lost. This explains the difficulty in concentrating after a bad night's sleep.