Key to the riddle of sleep may be linked to bacteria
What causes us to sleep? The answer may lie not only in our brains, but in their complex interplay with the microorganisms spawned in our intestines.
Sep 24, 2025
0
127
Sleep medicine news
A study questions melatonin use and heart health but don't lose sleep over it
Don't lose sleep over headlines linking melatonin to heart failure. That's the message after some scary-sounding reports about a preliminary study involving the sleep-related supplement. It raised questions about the safety ...
Nov 8, 2025
0
122
Cooler bedroom temperatures help the heart recover during sleep, finds study
Maintaining a bedroom temperature of 24°C (75°F) at night while sleeping reduces stress responses in older adults, according to new Griffith University research published in the journal BMC Medicine.
Jan 7, 2026
0
118
Poor sleep may accelerate brain aging
People who sleep poorly are more likely than others to have brains that appear older than they actually are. This is according to a comprehensive brain imaging study from Karolinska Institutet, published in the journal eBioMedicine. ...
Sep 30, 2025
0
116
Pink noise reduces REM sleep and may harm sleep quality
Pink noise—often used to promote sleep—may reduce restorative REM sleep and interfere with sleep recovery. In contrast, earplugs were found to be significantly more effective in protecting sleep against traffic noise, according ...
Feb 2, 2026
0
113
Priming for depression in a dimly lit world
St. Hedwig Hospital and Charité–Universitätsmedizin Berlin researchers report that repeated mornings spent under dim indoor light in healthy young adults raised afternoon and evening cortisol and reshaped sleep in ways known ...
How 'brain cleaning' while we sleep may lower our risk of dementia
The brain has its own waste disposal system—known as the glymphatic system—that's thought to be more active when we sleep.
Sep 6, 2025
0
111
Scientists discover a signature 'wave' of activity as the brain awakens from sleep
Each morning, your brain embarks on a remarkable series of events: it transitions from being asleep, potentially in an alternate reality, to waking up. Within a short time, you regain waking consciousness, reorient yourself ...
Jul 18, 2025
0
109
New study shows why some minds can't switch off at night
Australian researchers have found compelling evidence that insomnia may be linked to disruptions in the brain's natural 24-hour rhythm of mental activity, shedding light on why some people struggle to "switch off" at night.
Nov 26, 2025
0
135
Harnessing the body's internal clock to improve stroke recovery
A new study from scientists at the University of Rochester Medicine suggests that reinforcing the body's natural daily rhythms to improve sleep could help the brain recover after a stroke, pointing to a potential new strategy ...
Jun 15, 2026
0
106
