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 Much Sleep do People Need?

What is the Role of Melatonin in Sleep Regulation?

Sleep and Hormones

REM Sleep Activity

Neuroscience of Sleep

Can too much sleep be dangerous?

A Guide to Managing Sleep Disorders

Delayed Sleep Phase Disorder (DSPD) Management

What is the Circadian Rhythm?

Promoting Sounder Sleep in Older Adults

Regulation of Sleep

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How Can Sleep Affect Men's Health?

Sleep and Yoga

Tips on Getting to Sleep

What is Sleep Regression?

Sleep Deprivation - Inadequate Quantity of Sleep

Importance of Sleep

How Long should my Child Sleep for?

Effect of Sleep on Your Emotions

How to Catch up on Lost Sleep

Causes of Nocturnal Awakenings

Effects of Sleep Deprivation

Could Humans Ever Hibernate?

Difference Between Nightmares and Night Terrors

Stages of Sleep

Sleep Onset Mechanics: Understanding the Transition from Wakefulness to Slumber

Management of Sleep Deprivation

Why Do We Sleep?

Is Daytime Napping in Adults Good or Bad?

How Long Should My Teenager Sleep For?

Ghrelin and Sleep

Causes of Sleep Deprivation

Types of Sleep Disorders

How Can Mindfulness Meditation Improve Sleep?

What Does Polysomnography Involve?

Does Your Alarm Sound Affect Your Mood?

Function of Sleep

The Importance of Having a Good Night’s Sleep

The DEC2 Gene and Sleep

Brain Activity During Sleep

Role of Sleep in Memory Consolidation

Shift Work Sleep Disorder

History of Sleep

Nutritional Effects on Sleep

Why Do We Dream?

The Health Risks of Oversleeping

Circadian Rhythm Sleep Disorders

Hypnotics and Sleep

A Guide to Healthy Sleep Positions

Health Effects of Poor Sleep - Quantity and Quality

Stimulants and Sleep

How Does Sleep Affect Your Immunity?

What is Delayed Sleep Phase Disorder (DSPD)?

What is Sleep?

How Does Pain Affect Your Sleep?

Sleep Hygiene

Spoon Test for Sleep Deprivation

Latest Sleep News and Research

Global study links rising obesity to premature heart disease deaths

Researchers are warning that obesity is reshaping the global cardiovascular disease crisis, as trend data covering 204 countries reveal that heart disease now peaks in people aged 50-54 rather than the elderly and increasingly in South Asia, where rates have grown more than three times faster than global averages, according to a study being presented Monday at ENDO 2026, the Endocrine Society's annual meeting in Chicago, Ill.

15 Jun 2026

Long daily naps increase liver disease risk in diabetic patients

People with type 2 diabetes who nap longer than 30 minutes every day, regardless of their sleep patterns at night, increase their risk of developing metabolic dysfunction-associated steatotic liver disease (MASLD), according to a study being presented Monday at ENDO 2026, the Endocrine Society's annual meeting in Chicago, Ill.

15 Jun 2026

Reinforcing daily rhythms helps the brain recover after stroke

A new study from scientists at the University of Rochester Medicine suggests that reinforcing the body's natural daily rhythms to improve sleep could help the brain recover after a stroke, pointing to a potential new strategy to improve brain waste clearance and outcomes long after the initial injury.

15 Jun 2026

Synthetic cooling agents in e-cigarettes link to abnormal heartbeats

Synthetic cooling ingredients added to e-cigarettes caused abnormal heartbeats (arrhythmias) and increased cardiovascular risk measures in mice and lab-grown human heart cells, according to new independent research published today in Circulation: Arrhythmia and Electrophysiology, a peer-reviewed journal of the American Heart Association.

15 Jun 2026

Light-controlled molecular switch wakes lung cancer cells for treatment

Researchers from ETH Zurich have developed a molecular switch that is controlled by light. It wakes lung cancer cells up from a protective dormant state so that they are more accessible for treatment.

15 Jun 2026

Short-chain oat fiber helps steady glucose and ease gut symptoms in pilot trial

A 14-day open-label pilot study in 63 healthy adults found that short-chain oat fiber was well tolerated at doses up to 20 g/day and was associated with improved gastrointestinal symptom scores.

14 Jun 2026

Non-hormonal menopausal medication improves mood and hot flashes

The first real-world study of the FDA-approved non-hormone treatment fezolinetant found the menopausal medication improved hot flashes, depression and anxiety in women, according to industry-sponsored research being presented Sunday at ENDO 2026, the Endocrine Society's annual meeting in Chicago, Ill.

14 Jun 2026

Study finds gaps in guideline-based testosterone prescribing practices

Only a small number of men who were prescribed testosterone therapy received appropriate, guideline-concordant diagnostic testing, according to a study being presented Saturday at ENDO 2026, the Endocrine Society's annual meeting in Chicago, Ill, by Sophia Sinha, M.D., clinical assistant professor at the University of Michigan in Ann Arbor, Mich.

14 Jun 2026

GLP-1 therapy associated with more dizziness and fainting

Northwestern Medicine scientists have identified a safety concern associated with GLP-1 drugs. Using health record data, the research team tracked more than 42,000 adults already taking at least two types of blood pressure medications.

14 Jun 2026

Parkinson's drug may ease anhedonia in treatment-resistant depression

For many people who suffer from depression, the condition is not just about feeling down, but also about a loss of motivation and difficulty finding pleasure in activities they used to enjoy.

12 Jun 2026

Saliva biomarkers can directly detect acute sleep deprivation

A research team at the University of Zurich (UZH) has discovered biomarkers of sleep loss in saliva. Acute sleep deprivation can be detected using just a single saliva sample.

12 Jun 2026

Antibody profiles offer insights into long Covid cognitive symptoms

Persistent symptoms after COVID-19 infection continue to affect millions of people worldwide, even as the number of acute infections has declined.

12 Jun 2026

No link between cat ownership and asthma flare-ups in children

A study of over 30,000 children reveals no link between cat exposure and asthma outcomes, challenging previous concerns about pet ownership and asthma control.

12 Jun 2026

Moderate screen time post concussion may help teens recover faster

New research indicates that balanced screen use after a concussion can accelerate recovery in youth, suggesting a 'Goldilocks' approach to screen time.

12 Jun 2026

ChatGPT fills gaps like a confabulator, not a hallucinating mind

A Perspective article argues that large language model errors more closely resemble confabulations, while speech recognition errors, such as unsupported Whisper transcriptions, are functionally closer to hallucinations. The authors stress that these parallels are behavioral and provisional, not evidence of shared consciousness, and suggest that psychiatric concepts could help improve AI reliability.

11 Jun 2026

Trial finds prunes do not outperform calcium and vitamin D for male bone density

A one-year randomized trial found that daily prune supplementation did not improve total or lumbar spine bone mineral density in older men susceptible to, or with, osteopenia. Although some bone turnover biomarkers differed between prune and control groups, these changes did not translate into measurable bone density benefits beyond calcium and vitamin D3 supplementation.

11 Jun 2026

Oral GLP-1 drug elecoglipron helps adults lose up to 11.8% body weight

Once-daily oral elecoglipron produced dose-dependent weight loss in adults with obesity or overweight without diabetes, with mean reductions reaching 10.5% at 26 weeks and 11.8% at 36 weeks in the highest-dose weekly-titration group. The phase 2 trial found no evidence of a weight-loss plateau by 36 weeks, while gastrointestinal adverse events were common but generally manageable.

11 Jun 2026

Increased stress, reduced sleep alter brain structure and function in children

A new study suggests that variables linked to socioeconomic status (SES) – such as increased stress and reduced sleep – have strong relationships to brain structure and function in children.

11 Jun 2026

Circadian clock protein BMAL1 enhances inflammatory responses in immune cells

Daily life is shaped by the solar day, influencing when we wake up, eat, work, and sleep. Inside the body, a similar internal timing system -present in nearly every cell- known as the circadian clock, synchronizes many biological functions such as sleep, metabolism, hormone release, and even the immune system's activity.

11 Jun 2026

More movement and less sitting benefit pregnant women

Women who engage in light physical activity and lessen their sedentary time may significantly reduce the risk of key health problems during pregnancy, according to a new University of Iowa-led study.

10 Jun 2026