Tag

Sleep Deprivation

All articles tagged with #sleep deprivation

health8 days ago•98 min saved

Sleep deprivation triggers brain–gut signals that damage gut stem cells

New research in Cell Stem Cell shows sleep deprivation in mice activates a brain-to-gut signaling cascade via the vagus nerve, triggering a surge of serotonin in the gut that damages intestinal stem cells and impairs the gut’s regenerative capacity. The study links insomnia to gut dysfunction and suggests acetylcholine from the vagus nerve drives serotonin release, highlighting potential therapeutic targets to protect gut health in sleep-disordered individuals.

via Live Science|

#gut-stem-cells #health #inflammatory-bowel-disease

science22 days ago•5 min saved

Sleep Debt Triggers Wakeful Brain Cleanup at Attention's Expense

MIT researchers found that after sleep deprivation, brief attention lapses coincide with cerebrospinal fluid moving out of the brain—an event normally seen during sleep to clear waste. The brain appears to enter a sleep-like state during wakefulness to restore function, trading attention for fluid flow, with slowing breathing, lower heart rate, and pupil constriction; EEG/fMRI data from 26 volunteers point to the noradrenergic system, and findings were published in Nature Neuroscience.

via SciTechDaily|

#attention #cerebrospinal-fluid #glymphatic-system

law22 days ago•2 min saved

Exhausted DOJ AUSA Triggers Contempt Plea as Internal Turmoil Unfolds

An overwhelmed DOJ attorney tells a judge, “the system sucks, this job sucks,” highlighting turmoil at the department—from staffing shortages and aggressive recruitment to criticism of the Trump-era approach toward prosecutors and judges—set against Minnesota’s ongoing legal frictions.

via Above the Law|

#ausas #contempt #doj

health25 days ago•15 min saved

Sleep Banking: Can Extra Rest Be Stored for a Future Wake-Up?

The BBC explores whether “sleep banking”—extending sleep in advance of anticipated deprivation—really helps alertness and performance. Early military studies suggested benefits, and some doctors and athletes have reported improved performance after extra sleep. Yet researchers remain divided: some argue sleep can’t be stored like a bank and that improvements may reflect avoiding debt rather than storing surplus. Most agree seven to nine hours of nightly sleep is optimal, and while 30–60 extra minutes or short naps before a busy period can help, sleep banking isn’t a long-term solution and shouldn’t replace regular sleep.

via BBC|

#cognitive-performance #health #naps

wellness1 month ago•60 min saved

Under-7-Hour Sleep? A Sleep Expert Weighs In on Health Risks

A reader who often sleeps fewer than seven hours learns from a sleep expert that cutting sleep can carry health risks, with explanations of why even modest sleep loss matters and practical tips to improve sleep quality and duration.

via Tom's Guide|

#expert #health #sleep

science1 month ago•8 min saved

Sleep loss triggers wakeful brain cleaning that trades attention for maintenance

Short on sleep, the brain periodically triggers a sleep-like cleaning process during wakefulness, with cerebrospinal fluid moving out of the brain as attention lapses occur and then flowing back when focus returns. This compensatory mechanism temporarily reduces attention but may help restore cognitive function, suggesting a coordinated brain-body system—potentially involving the noradrenergic system—that links wakeful attention, fluid dynamics, and basic physiological signals.

via ScienceDaily|

#attention-lapses #brain-cleaning #cerebrospinal-fluid

health2 months ago•10 min saved

New Brain Research Changes Understanding of How ADHD Medications Work

A large brain imaging study reveals that ADHD medications like Adderall and Ritalin primarily affect brain regions related to arousal and wakefulness, not attention networks as previously believed. These drugs mimic the brain patterns of good sleep, effectively rescuing sleep-deprived children temporarily, but do not enhance cognitive abilities in well-rested children. The findings suggest that sleep issues may underlie some ADHD symptoms and highlight the importance of addressing sleep health.

via Study Finds|

#adhd #arousal #brain-imaging

science2 months ago•7 min saved

New Research Shows ADHD Medications Mimic Sleep, Not Attention Control

A new study reveals that ADHD medications like methylphenidate primarily act on brain networks related to wakefulness and reward, rather than attention control, by enhancing arousal and motivation, and can mask sleep deprivation effects, challenging traditional views of how these drugs work.

via PsyPost|

#adhd #arousal #brain-networks

health2 months ago•7 min saved

New Research Shows ADHD Medications Mimic Sleep Effects, Not Direct Attention Control

A study reveals that ADHD medications like Ritalin and Adderall primarily boost alertness and motivation by affecting brain reward and wakefulness systems, rather than directly improving attention, and may mimic sleep effects, raising concerns about sleep deprivation in diagnosis and treatment.

via SciTechDaily|

#adhd #brain-scans #health

health2 months ago•3 min saved

Early Smartphone Use Linked to Health Risks in Children

A study by UC Berkeley and Columbia University found that children 12 and under who receive smartphones are at higher risk of depression, obesity, and sleep issues, with earlier exposure increasing these risks, highlighting concerns about early smartphone use and its impact on child health.

via Futurism|

#children #health #mental-health

health-and-neuroscience3 months ago•5 min saved

The Impact of Sleep and Daydreaming on Brain Health

New research reveals that zoning out, often linked to microsleep, involves brain and body changes such as increased cerebrospinal fluid and pupil narrowing, serving as a reset mechanism especially when tired or sleep-deprived, and may be a normal, healthful process or a sign of underlying issues.

via Prevention|

#attention-lapses #brain #health-and-neuroscience

science3 months ago•3 min saved

Sleep Deprivation Disrupts Brain Function and Focus, Study Finds

A study from MIT reveals that zoning out may be the brain's way of performing maintenance by increasing cerebrospinal fluid flow, especially when sleep-deprived, which temporarily impairs attention but helps clear waste products from the brain.

via ScienceAlert|

#brain #csf-flow #mit-study

health3 months ago•3 min saved

The Impact of Less Than 4 Hours of Sleep on Health and Brain Function

Even one night of less than four hours of sleep can impair immune function, reducing the activity of virus-fighting cells and increasing vulnerability to illness, but the immune system can recover with proper sleep routines. Chronic sleep deprivation is linked to serious health issues like obesity, diabetes, and heart disease, emphasizing the importance of prioritizing quality sleep for overall health and immunity.

via The Times of India|

#health #health-risks #immune-system

health-and-neuroscience3 months ago•65 min saved

How Sleep Deprivation Disrupts Brain Function and Attention

Sleep deprivation impairs the brain's waste clearance via the glymphatic system, leading to attention lapses and potential long-term effects; power napping and sleep quality are crucial for maintaining brain health, and research is ongoing into ways to enhance these natural processes.

via Hacker News|

#brain-health #csf-flow #glymphatic-system

health-and-neuroscience3 months ago•7 min saved

How Sleep Deprivation Causes Brain 'Zoning Out' and Fog

New research from MIT reveals that after poor sleep, the brain releases cerebrospinal fluid in waves during attention lapses, mimicking sleep's cleansing process but impairing alertness, suggesting a link between sleep, brain cleaning, and attention regulation.

via Neuroscience News|

#attention-lapses #brain-cleansing #cerebrospinal-fluid