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.

Hypnotics and Sleep

What is the Circadian Rhythm?

How Can Sleep Affect Men's Health?

Brain Activity During Sleep

Tips on Getting to Sleep

Why Do We Sleep?

Stimulants and Sleep

Is Daytime Napping in Adults Good or Bad?

Ghrelin and Sleep

Does Your Alarm Sound Affect Your Mood?

The Health Risks of Oversleeping

See more featured articles »

Spoon Test for Sleep Deprivation

REM Sleep Activity

Neuroscience of Sleep

Delayed Sleep Phase Disorder (DSPD) Management

Sleep and Hormones

How Can Mindfulness Meditation Improve Sleep?

How Does Sleep Affect Your Immunity?

Circadian Rhythm Sleep Disorders

Sleep Deprivation - Inadequate Quantity of Sleep

Could Humans Ever Hibernate?

Stages of Sleep

Sleep and Yoga

What is the Role of Melatonin in Sleep Regulation?

Causes of Nocturnal Awakenings

How Much Sleep do People Need?

What Does Polysomnography Involve?

Why Do We Dream?

The Importance of Having a Good Night’s Sleep

Function of Sleep

Promoting Sounder Sleep in Older Adults

Management of Sleep Deprivation

Difference Between Nightmares and Night Terrors

History of Sleep

How to Catch up on Lost Sleep

Can too much sleep be dangerous?

Importance of Sleep

Sleep Onset Mechanics: Understanding the Transition from Wakefulness to Slumber

What is Delayed Sleep Phase Disorder (DSPD)?

Effects of Sleep Deprivation

Regulation of Sleep

Health Effects of Poor Sleep - Quantity and Quality

How Long Should My Teenager Sleep For?

Nutritional Effects on Sleep

How Does Pain Affect Your Sleep?

A Guide to Managing Sleep Disorders

What is Sleep Regression?

The DEC2 Gene and Sleep

What is Sleep?

Causes of Sleep Deprivation

How Long should my Child Sleep for?

A Guide to Healthy Sleep Positions

Shift Work Sleep Disorder

Role of Sleep in Memory Consolidation

Effect of Sleep on Your Emotions

Sleep Hygiene

Types of Sleep Disorders

Latest Sleep News and Research

Excessive exercise disrupts dopamine regulation in the brain, study finds

Excessive physical exercise affects more than just the muscles; it can also alter brain chemistry. A new study published in the journal Neuroscience revealed that exhaustive training without adequate rest alters the regulation of dopamine in the hippocampus, a brain region closely linked to memory and the regulation of emotions.

30 Oct 2026

Mayo Clinic enters new medical era with precure research

Mayo Clinic researchers are uncovering the earliest shifts in disease biology - long before symptoms appear - revealing how disease takes root and opening new possibilities to identify, predict and potentially prevent disease before symptoms develop.

30 Oct 2026

Permanent daylight saving time means darker morning school commutes

The U.S. House of Representatives passed a bill this past summer that would make Daylight Saving Time (DST) permanent in the United States - meaning there would be no turning back the clocks each fall.

30 Oct 2026

Holistic family surroundings are essential for raising healthy children

A child's health is shaped by more than inherited genes or the food on the table. Family routines, relationships, cultural practices, and everyday conditions—from early school schedules to long commutes—also influence how children grow and thrive, according to an Ateneo de Manila University medical professor and clinician.

30 Oct 2026

Tailoring prostate cancer radiotherapy to body clock could cut long-term side effects

A study by Leicester researchers shows that the timing of radiotherapy treatment may be as important as how it is given for prostate cancer patients.

30 Oct 2026

Online reviews reveal troubling side effects of insomnia drug lemborexant

Researchers from Rutgers and other universities analyzed hundreds of online reviews on lemborexant – and learned that about 1 in 4 of the reviewers stopped or planned to stop taking the prescription medication used to treat insomnia.

29 Oct 2026

Brief dietary changes may prime the immune system for inflammation

Scientists have long known that diet shapes the immune system. Now, a UC San Francisco team has found that even a brief dietary change can substantially change how the body responds to skin irritation, at least in mice.

29 Oct 2026

Study highlights the hidden dangers of permanent daylight saving time

In July 2026, the US House passed legislation to make daylight saving time (DST) permanent. But a new analysis of the consequences of the "Sunshine Protection Act," reported in the Cell Press journal Current Biology on October 29, finds that this legislation would come with serious safety consequences for millions of schoolchildren across the US who would have to leave for school before sunrise, when fatal crashes with pedestrians are more likely, for much of the school year.

29 Oct 2026

Circadian desynchronization: The hidden cost of daylight saving time transitions

Turning the clocks back an hour each fall can feel like a gift: an extra hour of sleep. But the tradeoff is less daylight in the evening, and the annual switch continues to earn mixed reviews.

29 Oct 2026

Sleep expert shares tips for adjusting to daylight saving time

The switch to standard time from daylight saving time will take place at 2 a.m. on Sunday, Nov. 1. That's right - the day after Halloween.

28 Oct 2026

Ketones may change sleep patterns, but not always for the better

Researchers reviewed animal and human studies and found that ketone bodies may affect sleep stages through energy metabolism and cellular signaling, with the clearest direct evidence involving acetoacetate in mice. They reported mixed human findings and called for controlled studies to separate ketone-specific effects from changes linked to diet, disease, circadian timing, and physiological stress.

28 Oct 2026

Climate change intensifies global health risks, Lancet Countdown report warns

The 2026 Report of the Lancet Countdown on Health and Climate Change finds that many of the health risks and harms of climate change grew faster in the decade since the Paris Agreement was introduced (2016–2025) than in the decade before it (2006–2015).

27 Oct 2026

Pregnancy night shifts associated with higher risk of developmental abnormalities in children

Working night shifts during pregnancy is linked to a heightened risk of neurodevelopmental abnormalities detected by screening in the child by the age of 4, finds research published online in Occupational & Environmental Medicine.

27 Oct 2026

Men with lower testosterone at 31 reported good health 15 years later

Researchers analyzed testosterone concentrations measured at age 31 in 2,691 Finnish men and assessed self-reported health, medical conditions, and quality of life at age 46. Men across testosterone quartiles generally reported good health and excellent quality of life, while differences in metabolic and gastrointestinal conditions lost statistical significance after adjustment for waist circumference.

27 Oct 2026

Could a few days of annual extreme heat raise dementia risk?

Extreme outdoor heat is associated with higher dementia risk, especially in socially vulnerable areas, emphasizing the need for targeted community strategies.

27 Oct 2026

Physical activity may help lower genetic risk of depression in adults

Adding physical activity to a daily routine may seem like a simple step for better health, but research from Kansas State University suggests it could be especially beneficial for individuals with a genetic predisposition to depression, potentially helping reduce their risk and ease their symptom burden.

26 Oct 2026

New report urges unified lifecycle approach to women's heart health

A new approach to women's heart health may offer them a lifetime of opportunities. A trio of scientific papers, published today in the journal Circulation, spells out how fluctuating hormones, mental health and well-being, the heart and the brain are linked and how those connections need to be a routine part of care from a young age.

26 Oct 2026

Women in perimenopause report more anxiety than other menopausal groups

Researchers reviewed 21 studies involving 24,523 women and found that perimenopausal and postmenopausal women had higher odds of reporting anxiety symptoms than premenopausal women. Their meta-analysis of 15 studies found the highest odds during perimenopause, but the cross-sectional evidence cannot establish that menopause causes anxiety.

25 Oct 2026

Non-dairy creamer drives up calorie count in coffee cups

While Americans have been drinking roughly the same amount of coffee over recent years, the calories in those cups have increased thanks primarily to the addition of non-dairy creamer, according to a new study from researchers at the Gerald J. and Dorothy R. Friedman School of Nutrition Science and Policy at Tufts University.

24 Oct 2026