Sleep

Sleep is a physiological behavior that is common in all animal species. It forms around one third of a human life. It is not known clearly the exact functions of sleep but it seems to be essential for survival as prolonged sleep deprivation leads to severe physical impairment followed by cognitive loss and eventually death.

How Morning Routines Influence Cognitive Performance, Mood, and Circadian Rhythm

How simple, evidence-based morning habits recalibrate the circadian system to sharpen cognition, stabilize mood, and support long-term mental health.

How Can Mindfulness Meditation Improve Sleep?

Promoting Sounder Sleep in Older Adults

Nutritional Effects on Sleep

Sleep Deprivation - Inadequate Quantity of Sleep

What is Sleep Regression?

Function of Sleep

Stimulants and Sleep

Causes of Sleep Deprivation

Hypnotics and Sleep

Causes of Nocturnal Awakenings

Why Do We Sleep?

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Role of Sleep in Memory Consolidation

Can too much sleep be dangerous?

What is Delayed Sleep Phase Disorder (DSPD)?

Regulation of Sleep

How to Catch up on Lost Sleep

How Does Sleep Affect Your Immunity?

Effects of Sleep Deprivation

Tips on Getting to Sleep

How Long should my Child Sleep for?

What is the Role of Melatonin in Sleep Regulation?

Sleep Hygiene

Sleep and Yoga

Is Daytime Napping in Adults Good or Bad?

How Can Sleep Affect Men's Health?

Stages of Sleep

Delayed Sleep Phase Disorder (DSPD) Management

Sleep and Hormones

Neuroscience of Sleep

Brain Activity During Sleep

History of Sleep

Management of Sleep Deprivation

What Does Polysomnography Involve?

REM Sleep Activity

Sleep Onset Mechanics: Understanding the Transition from Wakefulness to Slumber

Effect of Sleep on Your Emotions

Does Your Alarm Sound Affect Your Mood?

How Long Should My Teenager Sleep For?

What is Sleep?

What is the Circadian Rhythm?

Types of Sleep Disorders

How Does Pain Affect Your Sleep?

Circadian Rhythm Sleep Disorders

Importance of Sleep

A Guide to Managing Sleep Disorders

A Guide to Healthy Sleep Positions

The Health Risks of Oversleeping

The Importance of Having a Good Night’s Sleep

The DEC2 Gene and Sleep

Health Effects of Poor Sleep - Quantity and Quality

Spoon Test for Sleep Deprivation

Ghrelin and Sleep

Shift Work Sleep Disorder

Could Humans Ever Hibernate?

Why Do We Dream?

How Much Sleep do People Need?

Difference Between Nightmares and Night Terrors

Latest Sleep News and Research

Aligning overnight fasting with sleep improves heart health

A new Northwestern Medicine study has personalized overnight fasting by aligning it with individuals' circadian sleep-wake rhythm - an important regulator of cardiovascular and metabolic function - without changing their caloric intake.

12 Feb 2026

Addictive screen habits harm early adolescent mental health

New research following US adolescents ages 11–12 shows that problematic use of mobile phones, social media, and video games was associated with higher risks of mental health problems, sleep disturbance, and suicidal behaviors one year later.

12 Feb 2026

Can hot baths lower high blood pressure?

A review highlights hot water immersion's potential in lowering blood pressure, emphasizing it as an adjunct therapy alongside traditional treatments.

12 Feb 2026

Airborne toxin exposure drives unique biological pattern of chronic rhinosinusitis

Researchers at the University of California San Diego and the Veterans Affairs San Diego Healthcare System have identified a distinct biological pattern of chronic rhinosinusitis (CRS), a chronic respiratory illness frequently associated with exposure to airborne toxins, such as wildfire smoke and military burn pits.

11 Feb 2026

Simple wrist-worn device enables early detection of depression relapse

Could a smart watch act as an early‑warning system for depression relapse? New research from McMaster University suggests that disruptions in a person's sleep and daily activity routine, as detected through a simple wrist-worn device, can signal when there is increased risk of relapsing into major depression.

11 Feb 2026

Night-time traffic noise may affect metabolic health

A new study has found that nighttime noise exposure is associated with changes in blood cholesterol and lipid-related metabolites in adults, which are known risk factors for cardiometabolic diseases.

11 Feb 2026

South Asian adults in the U.S. have higher prevalence of risk factors for heart disease

South Asian adults in the U.S. report doing many of the right things for heart health, yet they show significantly higher rates of prediabetes, diabetes and hypertension than white and Chinese adults, and higher than or roughly similar rates to Black and Hispanic patients, according to a new study led by Northwestern Medicine.

11 Feb 2026

End of enhanced Obamacare subsidies puts tribal health lifeline at risk

Leonard Bighorn said his mother tried for two years to get help for severe stomach pain through the limited health services available near her home on the Fort Peck Reservation in northeastern Montana.

11 Feb 2026

Niacin shows promise in improving treatment for glioblastoma patients

Edward (Ed) Waldner had no idea why he didn't feel well but he knew he didn't feel like himself. At 55-years of age he felt exhausted all the time.

10 Feb 2026

Work productivity declines for adults living with tinnitus symptoms

A new study has revealed the significant effect tinnitus can have on people's working lives, with nearly one in five adults reporting they have had to cut their working hours or leave employment altogether because of the condition.

10 Feb 2026

Low-grade inflammation connects aging, obesity and cognitive impairment

Obesity and older age are strongly associated with low-grade inflammation in the body, a condition that appears closely linked to cognitive decline and dementia.

9 Feb 2026

Brain immune cells regulate new neuron formation in adults

Breakthrough research from the University of Cincinnati College of Medicine is revealing how immune cells in the adult brain can regulate the generation of new neurons.

9 Feb 2026

Tirzepatide shows dual benefits in sleep apnea trial improving metabolism and reducing inflammation

Tirzepatide significantly improved cardiometabolic risk markers in adults with obesity and moderate to severe obstructive sleep apnea in the SURMOUNT-OSA phase 3 trials. Mediation analyses suggest both weight loss and reduced sleep-disordered breathing contributed to improvements in inflammation, insulin resistance, lipids, and blood pressure.

9 Feb 2026

AI-powered tool automatically segments human brainstem white matter bundles

Small and dense but filled with vitally important neural fibers, the brainstem has been hard for brain imaging technologies to dissect.

9 Feb 2026

Most statin side effects are not backed by trials

Research indicates that many statin therapy side effects are not supported by evidence, suggesting a need for revised labeling to improve treatment decisions.

9 Feb 2026

Public health workers are quitting over assignments to Guantánamo

Rebekah Stewart, a nurse at the U.S. Public Health Service, got a call last April that brought her to tears. She had been selected for deployment to the Trump administration's new immigration detention operation at Guantánamo Bay, Cuba.

9 Feb 2026

Late sleepers have higher heart risk, and it's mostly preventable

Researchers explore the association between an individual’s chronotype and cardiovascular risk.

9 Feb 2026

Moderate exercise lowers atrial fibrillation recurrence after ablation

New research from CU Anschutz scientists suggests that staying physically active after heart rhythm treatment may significantly reduce the risk of atrial fibrillation (AF) returning, offering patients a simple, low-cost way to support long-term heart health.

7 Feb 2026

Mental sharpness boosts goal completion equivalent to extra work time

A new U of T Scarborough study finds that being mentally sharp can translate into a productivity boost equivalent to about 40 extra minutes of work each day.

6 Feb 2026