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.

What is Sleep?

Circadian Rhythm Sleep Disorders

REM Sleep Activity

Hypnotics and Sleep

Regulation of Sleep

What Does Polysomnography Involve?

Effects of Sleep Deprivation

Ghrelin and Sleep

Types of Sleep Disorders

Stages of Sleep

Causes of Nocturnal Awakenings

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How Long Should My Teenager Sleep For?

Sleep Hygiene

Management of Sleep Deprivation

Role of Sleep in Memory Consolidation

How Does Pain Affect Your Sleep?

Neuroscience of Sleep

Delayed Sleep Phase Disorder (DSPD) Management

How Can Sleep Affect Men's Health?

What is the Circadian Rhythm?

A Guide to Healthy Sleep Positions

Sleep Deprivation - Inadequate Quantity of Sleep

How to Catch up on Lost Sleep

What is the Role of Melatonin in Sleep Regulation?

What is Sleep Regression?

Difference Between Nightmares and Night Terrors

Shift Work Sleep Disorder

Sleep Onset Mechanics: Understanding the Transition from Wakefulness to Slumber

Sleep and Yoga

Health Effects of Poor Sleep - Quantity and Quality

How Much Sleep do People Need?

Why Do We Dream?

Promoting Sounder Sleep in Older Adults

Brain Activity During Sleep

Why Do We Sleep?

Function of Sleep

Does Your Alarm Sound Affect Your Mood?

Sleep and Hormones

Is Daytime Napping in Adults Good or Bad?

Effect of Sleep on Your Emotions

The Health Risks of Oversleeping

Causes of Sleep Deprivation

Tips on Getting to Sleep

How Does Sleep Affect Your Immunity?

A Guide to Managing Sleep Disorders

Stimulants and Sleep

How Long should my Child Sleep for?

Spoon Test for Sleep Deprivation

Importance of Sleep

The Importance of Having a Good Night’s Sleep

History of Sleep

What is Delayed Sleep Phase Disorder (DSPD)?

How Can Mindfulness Meditation Improve Sleep?

Can too much sleep be dangerous?

The DEC2 Gene and Sleep

Nutritional Effects on Sleep

Could Humans Ever Hibernate?

Latest Sleep News and Research

Study tests chronotype’s liver link and finds no significant association

Researchers found no significant association between chronotype and FibroScan-derived liver fat or stiffness in 119 medication-naïve adults with overweight or obesity. The exploratory findings cannot exclude smaller effects, particularly for fibrosis, and require confirmation in larger longitudinal studies.

21 Jul 2026

Researchers uncover brain target to counter fentanyl-induced slow breathing

Fentanyl causes symptoms that can lead to death from overdose. One of these symptoms is slow breathing, which deprives drug users of oxygen.

20 Jul 2026

Spring clock change increases retinal vascular disease risk, study finds

For the first time, Northwestern Medicine scientists have detailed how the semiannual clock changes impact a person's risk of developing retinal vascular disease, a group of disorders that affect blood vessels in the retina and can lead to vision loss.

20 Jul 2026

High costs continue limiting insurance coverage for GLP-1 medications

Despite growing evidence that GLP-1 medications improve health and are worth their cost, many insurance plans still limit coverage. University of Mississippi researchers are examining why, and where that leaves patients.

20 Jul 2026

High doses of caffeine from energy drinks cause cardiovascular harm

Previous studies have found that caffeine is the world's most popular stimulant and psychoactive substance, and coffee is the most common way people consume caffeine.

20 Jul 2026

Chrononutrition shows promise for postpartum weight management

New research has found that eating habits that align most closely with a woman's existing routine show promise for losing postpartum baby weight, especially for mothers earlier in the postpartum period.

20 Jul 2026

Long-term study shows how neighborhood conditions shape women's heart health

Women who live in disadvantaged neighborhoods face worse heart health and experience faster decline as they approach menopause, according to a long-term study led by the Harvard Pilgrim Health Care Institute.

17 Jul 2026

Dexamphetamine and methylphenidate work similarly for ADHD but differ in weight effects

A head-to-head trial of ADHD treatments finds dexamphetamine and methylphenidate equally effective, with notable differences in weight management over time.

17 Jul 2026

Online harassment and screen time linked to suicidal thoughts

In the digital age, adolescents and young adults increasingly form social connections through online spaces, including social media, gaming and messaging platforms, which serve as venues for identity exploration, peer connection and emotional validation.

16 Jul 2026

Study highlights communication gaps between cancer survivors and providers on cannabis

For many cancer survivors, cannabis has become part of how they manage symptoms such as pain, nausea and anxiety.

16 Jul 2026

Flexible wireless sensors set to transform continuous health tracking

As chronic diseases surge and populations age worldwide, the critical inadequacy of hospital-centered, episodic physiological monitoring has never been more apparent.

16 Jul 2026

Evening chronotype links later eating with higher body fat

Research shows evening chronotypes in women consume more energy later, leading to higher body fat and metabolic issues, highlighting chrono-nutrition's role.

16 Jul 2026

Sleeping longer may signal early Alzheimer's-related brain changes

Regularly sleeping long hours each night is associated with higher levels of an Alzheimer's-related protein in the blood, even accounting for other health factors, suggests a new study from UT Health San Antonio, the academic health center of The University of Texas at San Antonio.

15 Jul 2026

Study sheds light on the prognostic value of blood test for predicting cognitive impairment risk

A blood test for the biomarker phosphorylated tau 217 (p-tau217) recently received federal clearance, but questions have emerged around the extent to which such tests can accurately predict whether a cognitively healthy individual will go on to develop cognitive impairment-a key symptom of Alzheimer's disease.

15 Jul 2026

Reddit exposes menopause symptoms often missing from medical records

Nearly half the world's population experiences menopause, yet many of its emotional, cognitive and social impacts may never be discussed during medical appointments.

14 Jul 2026

New wearable microneedle patch tracks medicine levels in real time

Wearable devices have transformed how people track exercise, sleep, heart rate and other vital signs.

14 Jul 2026

New report highlights top ten brain health breakthroughs for clinicians

"Understanding Breakthroughs in Brain Health: Top 10 Articles of 2025" - the latest "Top 10" report in the Gerontological Society of America's Insights & Implications in Gerontology series - presents a curated collection of the year's most impactful research on cognitive decline, dementia detection, and brain health across the lifespan, with a focus on actionable insights for primary care providers.

14 Jul 2026

Poor sleep alters brain communication networks differently across adult lifespan

Have trouble sleeping? The reason may depend in part on your age. A recent study including psychology researchers from Binghamton University, State University of New York investigates how poor sleep alters brain communication across the adult lifespan, specifically examining how these changes vary by age and biological sex.

14 Jul 2026

New study quantifies how future climate change threatens mental health

A new study has, for the first time in the world, quantitatively projected how climate change will affect mental health at a multi-country level.

14 Jul 2026

Newborn breathing collapse risk highest in first 24 hours

Sudden unexpected postnatal collapse (SUPC) occurs when an apparently healthy newborn suddenly stops breathing and collapses during the first week of life.

14 Jul 2026