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 Sleep Affect Men's Health?

What is Delayed Sleep Phase Disorder (DSPD)?

What Does Polysomnography Involve?

Promoting Sounder Sleep in Older Adults

What is the Circadian Rhythm?

How Long should my Child Sleep for?

Is Daytime Napping in Adults Good or Bad?

The Importance of Having a Good Night’s Sleep

Tips on Getting to Sleep

Causes of Sleep Deprivation

Neuroscience of Sleep

See more featured articles »

Circadian Rhythm Sleep Disorders

How Does Pain Affect Your Sleep?

Nutritional Effects on Sleep

A Guide to Healthy Sleep Positions

Why Do We Dream?

Why Do We Sleep?

What is Sleep?

A Guide to Managing Sleep Disorders

Role of Sleep in Memory Consolidation

The DEC2 Gene and Sleep

Sleep and Yoga

What is Sleep Regression?

How Can Mindfulness Meditation Improve Sleep?

Effect of Sleep on Your Emotions

Sleep Onset Mechanics: Understanding the Transition from Wakefulness to Slumber

Function of Sleep

Spoon Test for Sleep Deprivation

Delayed Sleep Phase Disorder (DSPD) Management

Management of Sleep Deprivation

Causes of Nocturnal Awakenings

Does Your Alarm Sound Affect Your Mood?

Regulation of Sleep

Brain Activity During Sleep

Ghrelin and Sleep

REM Sleep Activity

Shift Work Sleep Disorder

History of Sleep

Health Effects of Poor Sleep - Quantity and Quality

Sleep Deprivation - Inadequate Quantity of Sleep

Stimulants and Sleep

Sleep Hygiene

Difference Between Nightmares and Night Terrors

Types of Sleep Disorders

Hypnotics and Sleep

What is the Role of Melatonin in Sleep Regulation?

How Long Should My Teenager Sleep For?

Stages of Sleep

Importance of Sleep

How to Catch up on Lost Sleep

The Health Risks of Oversleeping

Could Humans Ever Hibernate?

Can too much sleep be dangerous?

How Does Sleep Affect Your Immunity?

How Much Sleep do People Need?

Effects of Sleep Deprivation

Sleep and Hormones

Latest Sleep News and Research

Perimenopause nearly doubles women’s odds of poor heart health

Perimenopause is linked to worsening cardiovascular health, with significant declines in lipid and glucose scores, emphasizing the need for early assessment.

15 May 2026

Can supplements slow Parkinson’s disease? Review reveals where the evidence stands

Dietary supplements are widely used by people with Parkinson’s disease, but this review finds that none have yet been proven to slow disease progression. Biotics, nicotinamide riboside, and omega-3 fatty acids combined with vitamin E show the most promise, but larger, longer, and better-designed trials are needed.

14 May 2026

The Goldilocks sleep zone: study links too little and too much sleep to biological aging

The Nature study introduces “Sleep Chart,” a framework linking self-reported sleep duration with 23 biological aging clocks derived from MRI, plasma proteomics, and metabolomics. Across UK Biobank participants, the lowest biological age gaps generally appeared between 6.4 and 7.8 hours of sleep, while shorter and longer sleep were associated with higher disease and mortality risk.

14 May 2026

Study traces adult heart disease risk back to the womb

A child's future heart health may be partially shaped before they are born, reports a new Northwestern Medicine study that found pregnancy complications are linked to poorer cardiovascular health in offspring more than 20 years later.

14 May 2026

A comprehensive longitudinal study reveals dreams are shaped by personality

A study that analyzed, over four years, thousands of reports of dreams and waking experiences reports that what we dream is shaped by stable individual traits, such as attitudes toward dreaming, the tendency for mind-wandering, and subjective sleep quality.

14 May 2026

Study warns of rising cognitive impairment following a heart attack

The chance of developing cognitive impairment was significantly higher for people who have had a heart attack, according to a study published today in Stroke, the peer-reviewed scientific journal of the American Stroke Association, a division of the American Heart Association.

14 May 2026

Wearable wireless polygraph tracks hidden stress signals

Northwestern University engineers have developed a small, wireless polygraph system you can wear.

13 May 2026

Too little or excessive sleep may accelerate organ aging

An analysis of biological clocks throughout the human body suggests that too few hours of sleep-and too many-may speed aging in the brain, heart, lung, and immune system and is associated with a wide range of diseases.

13 May 2026

Perimenopausal women face higher risk of low heart health

Perimenopausal women were two times more likely to have a low cardiovascular health score compared to women having regular menstrual cycles, according to an analysis of nationwide U.S. data published today in the Journal of the American Heart Association, an open-access, peer-reviewed journal of the American Heart Association.

13 May 2026

Selective eating in autism linked to inflammatory gut bacteria

Eating habits shape gut bacteria in children with autism, with potential dietary interventions offering hope for improving gut health and inflammation.

13 May 2026

Disrupted circadian rhythms may accelerate dementia-related brain inflammation

Alzheimer's disease and other dementias impact approximately 55 million people worldwide, including 7.2 million cases in the United States alone.

13 May 2026

Worms help researchers tackle rare childhood genetic disease

A new worm model developed by Brown University researchers could play a key role in treating a rare genetic disease that causes paralysis in children and worsens with age.

13 May 2026

Why older adults are turning to edible cannabis for sleep, pain, and mood

Older adults in Colorado were drawn to edible cannabis mainly to manage sleep problems, pain, anxiety, or depression, often after concerns about conventional medicines or limited relief from other treatments. Most participants preferred THC-CBD combination products, but they remained uncertain about dosing, impairment, effectiveness, and how to choose the right cannabinoid ratio.

12 May 2026

Researchers map the brain histamine system to understand mental health

New research, from King's College London and the University of Porto, has mapped the histamine system in the brain. Histamine, a molecule more commonly associated with allergies, plays a separate but poorly understood role in brain function.

12 May 2026

New model improves outcome predictions for patients with hypertrophic cardiomyopathy

Findings from a study supported in part by the National Institutes of Health (NIH) have identified a new model for predicting outcomes for hypertrophic cardiomyopathy (HCM), a heart condition with a prevalence of 1 in 500 people and a frequent cause of sudden cardiac death.

11 May 2026

Shaping the future of asthma management with the NObreath® at ATS 2026

World leaders in breath analysis Bedfont® Scientific Ltd. are pleased to be attending this years American Thoracic Society (ATS) International Conference, to exhibit the innovative NObreath® Fractional exhaled Nitric Oxide (FeNO) device at booth 1236 alongside its US distributor coVita™.

From Bedfont® Scientific Ltd 11 May 2026

Greater weight loss from GLP-1 drugs lowers health complication risk

New research to be presented at this year's European Congress on Obesity (ECO 2026, Istanbul, Turkey, 12-15 May) shows that, following treatment for obesity or diabetes or both using incretin-based drugs, losing more weight versus less weight, and losing a little weight versus gaining weight, both lead to relatively lower risk of obesity-related conditions.

10 May 2026

Exercise or caffeine? Study finds neither clearly beats placebo for mental fatigue

Researchers compare the effects of caffeine and aerobic exercise on mental fatigue in adults.

10 May 2026

Older adults increasingly use cannabis for pain and sleep relief

For adults over 60, cannabis use is increasing faster than in any other demographic.

8 May 2026

AI-driven hormone tracking could help detect infertility early and improve conception

Men and women who appear hormonally 'normal' may still have undetected disruptions in the timing and coordination of their reproductive hormones that could impair fertility, according to research presented at the 28th European Congress of Endocrinology in Prague.

8 May 2026