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.

What is Sleep?

Can too much sleep be dangerous?

What is the Role of Melatonin in Sleep Regulation?

A Guide to Managing Sleep Disorders

Causes of Sleep Deprivation

Tips on Getting to Sleep

Causes of Nocturnal Awakenings

Hypnotics and Sleep

How Long Should My Teenager Sleep For?

What is Delayed Sleep Phase Disorder (DSPD)?

Delayed Sleep Phase Disorder (DSPD) Management

Promoting Sounder Sleep in Older Adults

See more featured articles »

Function of Sleep

Shift Work Sleep Disorder

How Much Sleep do People Need?

REM Sleep Activity

How to Catch up on Lost Sleep

Sleep and Hormones

The Importance of Having a Good Night’s Sleep

Ghrelin and Sleep

How Long should my Child Sleep for?

The DEC2 Gene and Sleep

How Does Pain Affect Your Sleep?

Why Do We Sleep?

History of Sleep

Sleep and Yoga

Why Do We Dream?

Sleep Onset Mechanics: Understanding the Transition from Wakefulness to Slumber

Effects of Sleep Deprivation

What is Sleep Regression?

Importance of Sleep

Types of Sleep Disorders

Stages of Sleep

Health Effects of Poor Sleep - Quantity and Quality

Is Daytime Napping in Adults Good or Bad?

Sleep Deprivation - Inadequate Quantity of Sleep

What is the Circadian Rhythm?

Difference Between Nightmares and Night Terrors

A Guide to Healthy Sleep Positions

Stimulants and Sleep

Could Humans Ever Hibernate?

Effect of Sleep on Your Emotions

The Health Risks of Oversleeping

Management of Sleep Deprivation

Regulation of Sleep

What Does Polysomnography Involve?

How Does Sleep Affect Your Immunity?

How Can Mindfulness Meditation Improve Sleep?

Neuroscience of Sleep

Spoon Test for Sleep Deprivation

Sleep Hygiene

How Can Sleep Affect Men's Health?

Nutritional Effects on Sleep

Brain Activity During Sleep

Circadian Rhythm Sleep Disorders

Does Your Alarm Sound Affect Your Mood?

Role of Sleep in Memory Consolidation

Latest Sleep News and Research

Machine learning models can predict urgent care needs for patients with non–small cell lung cancer

A new study published in JCO Clinical Cancer Informatics demonstrates that machine learning models incorporating patient-reported outcomes and wearable sensor data can predict which patients with non–small cell lung cancer are most at risk of needing urgent care during treatment.

16 Sep 2025

Daily meal timing influences longevity risk in adults, study reveals

Researchers analysing Aging Cell data from over 33,000 US adults found a U-shaped link between daily eating window length and mortality. Eating for 11–12 hours per day was tied to the lowest risk, while very short (<8h) or long (≥15h) windows raised death risk, especially in older and White participants.

15 Sep 2025

NIH awards over 8.6 million grant to advance research on rare developmental synaptopathies

Mustafa Sahin, MD, PhD, Neurologist-in-Chief and Chair of the Department of Neurology at Boston Children's Hospital, and his collaborators have been awarded an NIH grant of over $8.6 million for the third five-year cycle of the Rare Disease Clinical Research Network (RDCRN) project, "Developmental Synaptopathies Associated with TSC, PTEN, SHANK3, and SynGAP1 Pathogenic Variants".

15 Sep 2025

Global review links firearm access and ownership to mental health harms

Interventions to address firearm accessibility and related dangers should account not only for direct exposure to violence but also for complex psychosocial pathways through which firearms affect mental health across populations, according to a systematic scoping review published in the September/October issue of Harvard Review of Psychiatry, part of the Lippincott portfolio from Wolters Kluwer.

13 Sep 2025

A surgical team was about to harvest this man’s organs — until his doctor intervened

Lying on top of an operating room table with his chest exposed, Larry Black Jr. was moments away from having his organs harvested when a doctor ran breathlessly into the room.

12 Sep 2025

Common wearable devices could remotely monitor pregnancy-related health changes

A simple fitness tracker might hold the key to revolutionizing maternal healthcare. Scientists at Scripps Research have found preliminary evidence suggesting that common wearable devices such as the Apple Watch, Garmin and Fitbit could remotely monitor pregnancy-related health changes by tracking physiological patterns-like heart rate-that correlate with hormonal fluctuations.

11 Sep 2025

New diagnostic code brings recognition and support for Gulf War Illness

Gulf War illness (GWI), the chronic, debilitating condition linked to military service in the 1990-1991 Gulf War, will receive a dedicated diagnostic code in the October 2025 release of the International Classification of Diseases (ICD-10-CM).

11 Sep 2025

Elinzanetant reduces hot flashes in menopause

The OASIS-3 trial demonstrates elinzanetant's effectiveness in alleviating menopausal symptoms, reducing hot flashes significantly over a year-long study.

11 Sep 2025

Smartwatches may help detect PTSD linked to media exposure

In a three-year study involving more than 5,000 residents of Israel before and after the mass traumatic events of October 7, 2023, those who watched extensive media coverage of the attacks were found to be more likely to develop post-traumatic stress disorder (PTSD).

10 Sep 2025

AI spots movement alterations before Parkinson’s symptoms appear

Early detection of even the slightest motor function changes can be critical to slowing the progression of Parkinson's disease. Yet these subtle signs often go unnoticed.

10 Sep 2025

Chronic insomnia linked to faster cognitive decline and brain changes

People with chronic insomnia may experience faster declines in memory and thinking skills as they age-along with brain changes that can be seen on imaging scans-than people who do not have chronic insomnia, according to a study published in the September 10, 2025, issue of Neurology, the medical journal of the American Academy of Neurology.

10 Sep 2025

Early parent-focused programs fail to reduce childhood obesity by age two

Existing approaches to parent-focused behavioral programs delivered up to 12 months of age which aim to combat childhood obesity are insufficient to improve body mass index (BMI) at approximately two years of age, according to the largest study to date on the topic published in The Lancet.

10 Sep 2025

Daylight saving time does not increase heart attack risk, study shows

A large U.S. registry study of more than 168,000 patients found that daylight saving time (DST) clock changes did not increase heart attack rates or worsen in-hospital outcomes. The findings suggest that the lost or gained hour is unlikely to trigger acute myocardial infarction in contemporary care.

10 Sep 2025

Precision nutrition offers new pathways to slow biological aging

Diet doesn't just fuel the body, it sends molecular signals that can slow down or speed up biological aging, according to a new perspective in npj Aging (Nature Portfolio).

10 Sep 2025

Changing indoor environments could improve sleep for people living with dementia

Implementing changes to indoor environments, such as cooler bedrooms at night and increasing the amount of bright light during the day, could significantly improve sleep for people living with dementia, according to a study led by the University of Surrey.

9 Sep 2025

CPAP treatment may reduce death risk in people with both type 2 diabetes and sleep apnea

People with both type 2 diabetes (T2D) and obstructive sleep apnea have a higher risk of death, but treatment with continuous positive airway pressure (CPAP) may reduce that risk by around 26%, according to new research being presented at this year's Annual Meeting of The European Association for the Study of Diabetes (EASD), Vienna (15-19 Sept).

9 Sep 2025