Sleep Research

Explore scientific research on the consequences of sleep deprivation, related diseases, and disorders

Cardiovascular Health

Cardiovascular Health

Sleep Deprivation and Increased Risk of Cardiovascular Disease

A 10-year study of 4,000 adults found that sleeping less than 6 hours per night increased the risk of coronary heart disease by 48%. Shift workers with disrupted sleep patterns developed hypertension at 2.5 times the rate of day workers.

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Cardiovascular Health

Effects of Sleep Deprivation on Endothelial Function in Adults

Moderate sleep restriction (~2–3 hours less per night) impairs endothelial function across the vascular system, including coronary arteries. A single night of less than 4 hours of sleep can reduce coronary artery function, elevating the risk for acute myocardial ischemia.

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Cardiovascular Health

The Effect of Sleep Deprivation on Coronary Heart Disease

Sleep deprivation is associated with increased morbidity and mortality in coronary heart disease patients, potentially due to autonomic dysfunction, hypertension, arrhythmia, hormonal dysregulation, oxidative stress, and inflammation.

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Cardiovascular Health

Sleep in This Weekend – It May Help You Live Longer and Avoid Heart Disease

A study of 90,000 UK residents over 14 years found that those who caught up on sleep during weekends were 20% less likely to develop heart disease compared to those who remained sleep-deprived.

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Cardiovascular Health

How Sleeping in at Weekends Could Save Your Life

Sleeping in on weekends significantly reduces the risk of developing heart disease, as extra weekend sleep is associated with reduced inflammation and healthier blood pressure and cholesterol levels.

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Cardiovascular Health

Actually, You Can Catch Up on Sleep

Catching up on sleep during weekends can mitigate the adverse cardiac effects of a sleep-poor work week, reducing the risk of heart-related illnesses such as heart failure and stroke by 20%.

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Mental Health

Mental Health

Sleep Deprivation and Major Depressive Disorder

A longitudinal study of 10,000 individuals found that insomnia preceded the development of depression in 40% of cases. A case study highlighted a 28-year-old woman whose chronic insomnia led to major depression within 8 months, with symptoms resolving after cognitive behavioral therapy.

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Mental Health

Sleep Deprivation as a Trigger for Bipolar Disorder Episodes

Research indicates that sleep disruption precedes 65% of manic episodes in bipolar disorder patients. One case involved a 32-year-old software engineer whose 48-hour coding sessions triggered three consecutive manic episodes, stabilized only after implementing strict sleep regulation.

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Mental Health

Why Getting a Good Night's Sleep is Crucial if You Have High Blood Pressure

A study revealed that short sleep combined with hypertension affects cognitive performance and presents a higher risk of developing dementia, emphasizing the importance of consistent, quality sleep.

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Mental Health

Struggle to Fall Asleep or Feel Tired All the Time? You Could Be at Risk of Early Death from 'Circadian Syndrome'

Difficulty falling or staying asleep, along with persistent daytime fatigue, may signal circadian syndrome, linked to increased risks of depression and other chronic health issues.

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Mental Health

For Optimal Brain Function, Kids Need Better Sleep

Insufficient sleep in children affects brain structure, connectivity, behavior, cognition, and mental health, with negative effects lasting up to two years.

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Mental Health

Connecting Insufficient Sleep and Insomnia with Metabolic Dysfunction

Insomnia disorder and symptoms are strongly associated with adverse glucose outcomes, including in those with type 2 diabetes, highlighting the interplay between sleep and mental health.

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Metabolic Health

Metabolic Health

Sleep Deprivation's Role in Type 2 Diabetes Development

Chronic sleep restriction (5 hours/night for 1 week) reduces insulin sensitivity by 25% and impairs glucose tolerance. A case study involved a 42-year-old executive who developed prediabetes after 3 years of sleep restriction, reversing the condition after implementing proper sleep hygiene.

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Metabolic Health

Mechanisms of Sleep Deprivation-Induced Hepatic Steatosis and Insulin Resistance in Mice

A single 6-hour sleep deprivation in mice induced glucose intolerance and increased hepatic glucose production, leading to hepatic steatosis without weight gain, mediated by increased lipid oxidation in the liver.

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Metabolic Health

Metabolic Effects of Sleep Disruption, Links to Obesity and Diabetes

Sleep disruption has detrimental effects on metabolic health, decreasing insulin sensitivity and glucose tolerance, and promoting weight gain through increased food intake and decreased physical activity.

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Metabolic Health

The Impact of Sleep Disorders on Glucose Metabolism: Endocrine and Molecular Mechanisms

Short sleep duration is an independent risk factor for weight gain and abdominal fat accumulation, as it stimulates food intake and contributes to the development of obesity and metabolic syndrome.

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Metabolic Health

Prolonged Sleep Deprivation Induces a Reprogramming of Circadian Rhythmicity with the Hepatic Metabolic Transcriptomic Profile

Five days of sleep deprivation in mice altered liver function and daily rhythms, leading to changes in sleep patterns, feeding behavior, and significant alterations in genes related to metabolism.

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Metabolic Health

Insufficient Sleep is Responsible for Increased Risk of Metabolic Disease in Shift Workers

Insufficient sleep is an independent risk factor for type 2 diabetes, comparable to traditional risk factors like obesity, with sleep restriction leading to increased hunger, decreased insulin sensitivity, and altered brain activity related to food stimuli.

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Cognitive Function

Cognitive Function

Chronic Sleep Deprivation and Cognitive Impairment

Chronic sleep deprivation (less than 6 hours/night for 14 days) produces cognitive performance deficits equivalent to 48 hours of total sleep deprivation. A medical resident made critical medication errors after working 24-hour shifts, illustrating how sleep deprivation mirrors legal alcohol intoxication levels in performance degradation.

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Cognitive Function

The Effect of Total Sleep Deprivation on Cognitive Functions in Normal Adult Male Subjects

A study of 18 healthy males deprived of sleep for 24 hours found decreases in cognitive functions such as motor skills, speech, memory, and complex verbal arithmetic, particularly associated with the right anterior hemisphere.

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Cognitive Function

Sleep Deprivation Impairs Cognitive Performance and Alters Brain Function

A study published in Nature Scientific Reports demonstrates that 24 hours of sleep deprivation leads to significant impairments in cognitive performance, accompanied by altered cerebral blood flow and hemodynamic responses in cortical regions.

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Sleep Disorders

Sleep Disorders

Sleep and Mental Disorders: A Meta-Analysis of Polysomnographic Research

This comprehensive meta-analysis examines polysomnographic studies across various mental disorders, revealing that sleep continuity disturbances are common across multiple psychiatric conditions. The study highlights the role of REM sleep alterations in psychiatric comorbidities.

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Sleep Disorders

The Prevalence of Sleep Loss and Sleep Disorders in Young and Old Adults

This review discusses how sleep patterns and disorders vary across age groups, noting that nearly 50–60% of the elderly population suffer from sleep disorders such as sleep apnea and restless legs syndrome. It also explores the link between chronic sleep deprivation and neurodegenerative diseases like Alzheimer's and Parkinson's.

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Sleep Disorders

Sleep Disorders

This article provides an overview of six major sleep disorders, including insomnia, circadian rhythm disorders, sleep-disordered breathing, hypersomnia/narcolepsy, parasomnias, and restless legs syndrome. It discusses diagnostic features and management strategies, emphasizing the importance of recognizing and treating these conditions in clinical practice.

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Sleep Disorders

Sleep Disorders and Depression: Brief Review of the Literature, Case Report, and Nonpharmacologic Interventions for Depression

This paper explores the bidirectional relationship between sleep disorders and depression, highlighting how insomnia can be both a symptom and a predictor of depressive episodes. It also presents nonpharmacologic interventions, such as sleep deprivation therapy, as potential treatments for depression.

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Sleep Disorders

Sleep Disorders: Causes, Effects, and Solutions

This article delves into the causes and effects of various sleep disorders, including insomnia, jet lag, and shift work sleep disorder. It discusses their impact on overall health and well-being and reviews both pharmacologic and behavioral treatment options.

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Sleep Disorders

Sleep Disorders Research From 1945 to 2020: A Bibliometric Analysis

This bibliometric analysis traces the evolution of sleep disorder research over 75 years, highlighting trends, key areas of focus, and the increasing volume of publications in the field. It provides insights into the growth and development of sleep research globally.

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