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Health A-Z
Sleep Disorders
From getting more peaceful sleep to identifying and addressing sleep disorders that may be impacting your health, learn more about sleep concerns to get the quality rest your body needs.
9 Questions to Ask Yourself for Better Sleep
Medically reviewed by Jenny Sweigard, MD
Why You Always Wake up at the Same Time
Medically reviewed by Rony Kampalath, MD
The 4 Stages of Sleep (NREM and REM Sleep Cycles)
Medically reviewed by Steven Gans, MD
Night Sweats: Symptoms and Causes
Medically reviewed by Jenny Sweigard, MD
Explore Sleep Disorders
All
Symptoms
Causes & Risk Factors
Diagnosis
Treatment
More
Living With
Sleep Apnea
Insomnia & More Disorders
Healthy Sleep Habits
Why Am I Sleepy in the Afternoon After Eating Lunch?
Medically reviewed by Chris Vincent, MD
The Link Between Carbon Dioxide Retention and Sleep
Medically reviewed by Sanja Jelic, MD
Why WASO Has a Negative Effect on Sleep Quality
Medically reviewed by Jason DelCollo, DO
How to Improve Your Sleep Efficiency
Medically reviewed by Kashif J. Piracha, MD
10 Top Health Benefits of Sleep
Medically reviewed by Isaac O. Opole, MD, PhD
Sleep Latency and Its Impact on Your Sleep
Medically reviewed by Sanja Jelic, MD
Adenosine's Effect on the Sleep-Wake Cycle
Medically reviewed by Sanja Jelic, MD
How Much Do Different Sleep Apnea Treatments Cost?
Fact checked by Lisa Sullivan, MS
An Overview of Sleep Inertia
Medically reviewed by Elizabeth Molina Ortiz, MD, MPH
How to Avoid Falling Asleep While Driving
Medically reviewed by Michael Menna, DO
How to Use Fitness Trackers for Sleep Improvement
Fact checked by Lisa Sullivan, MS
Importance of Body and Mind Restoration During Sleep
Medically reviewed by Jason DelCollo, DO
Definition and Possible Causes of Sleepiness
Medically reviewed by Sanja Jelic, MD
Microsleep: Causes, Dangers, and Prevention
Medically reviewed by Sanja Jelic, MD
What Is Sleep Hygiene?
Medically reviewed by Keri Peterson, MD
False Awakening and Lucid Dreaming in REM Sleep
Medically reviewed by Anita C. Chandrasekaran, MD, MPH
Arousal During the Stages of Sleep
Medically reviewed by Sanja Jelic, MD
Alpha Waves and Your Sleep
Medically reviewed by Sanja Jelic, MD
Overview of Entrainment of Circadian Rhythms in Sleep
Medically reviewed by Rochelle Collins, DO
What Is the Link Between Sleep Apnea and Cancer?
Medically reviewed by Doru Paul, MD
Dreaming Sleep Brain Activity and Cycles
Medically reviewed by Sanja Jelic, MD
How Teeth Grinding May Link to Sleep Apnea
Medically reviewed by Sumaya Ibraheem, DDS
The 9 Best Pillows for Snoring of 2021
Fact checked by Ashley Hall
Diurnal Sleep and Disorders
Medically reviewed by Jason DelCollo, DO
Circadian Rhythms and Their Impact on Sleep
Medically reviewed by Elizabeth Molina Ortiz, MD, MPH
The Biological Clock in Sleep Medicine
Medically reviewed by Rochelle Collins, DO
What Is a Hypnagogic Jerk and What Causes Sleep Starts?
Medically reviewed by Rochelle Collins, DO
Pupil Size Can Objectively Identify Sleepiness
Medically reviewed by Sanja Jelic, MD
Words to Expand Your Sleep Vocabulary
Medically reviewed by Jenny Sweigard, MD
What Is Sleep Architecture?
Medically reviewed by Sanja Jelic, MD
Learn What Blind People See or Experience in Their Dreams
Medically reviewed by Kashif J. Piracha, MD
Symptoms, Causes, and Treatments of Parasomnias
Medically reviewed by Caitilin Kelly, MD
Overview of Hypnagogic Hallucinations During Sleep
Medically reviewed by Sanja Jelic, MD
Non-24-Hour Sleep-Wake Disorder
Medically reviewed by Sanja Jelic, MD
The Stages of Sleep - Sleep Cycles – Sleeps Phases
By Mark Stibich, PhD
Paradoxical as a Sleep State and Disorder
Medically reviewed by Keri Peterson, MD
Tips to Prepare for a Sleep Study and Avoid Insomnia
Fact checked by Lisa Sullivan, MS
World Narcolepsy Day: Recognizing Key Features
Medically reviewed by Sanja Jelic, MD
What Is Jet Lag?
Medically reviewed by Keri Peterson, MD
15 Reasons to Talk to Your Doctor About Your Sleep
Medically reviewed by Keri Peterson, MD
Orthosomnia: Symptoms, Causes, Diagnosis, and Treatment
Medically reviewed by Jason DelCollo, DO
The Detrimental Effects of Too Much Sleep
Medically reviewed by Keri Peterson, MD
Waking Up Tired: Reasons for Poor Sleep Quality
Medically reviewed by Sanja Jelic, MD
What Is Shift Work Sleep Disorder?
Medically reviewed by Jason DelCollo, DO
Hypersomnia: Symptoms, Causes, Diagnosis, and Treatment
Medically reviewed by Caitilin Kelly, MD
Sleepwalking: Symptoms, Causes, Treatment and More
Medically reviewed by Anju Goel, MD, MPH
Dream Deprivation: How Loss of REM Sleep Impacts Health
Medically reviewed by Sanja Jelic, MD
Treating and Preventing Night Terrors
Medically reviewed by Jenny Sweigard, MD
Somnolence and the Science of Drowsiness
Medically reviewed by Carly Snyder, MD
What Are the Physical Effects of Sleep Deprivation?
Medically reviewed by Sanja Jelic, MD
Sleep Deprivation: Overview and More
Medically reviewed by Jason DelCollo, DO
Is Falling Asleep Too Fast a Sign of a Sleep Disorder?
Medically reviewed by Sanja Jelic, MD
Side Effects of Sleep Deprivation
Medically reviewed by Jason DelCollo, DO
10 Surprising Signs of Sleep Apnea in Children
Medically reviewed by Jonathan B. Jassey, DO
The Link Between Sleep Deprivation and Depression
By Lauren Krouse
Restless Legs Syndrome: Causes and Risk Factors
By Brandon Peters, MD
Narcolepsy: Causes and Risk Factors
Medically reviewed by Sanja Jelic, MD
Insomnia: Causes and Risk Factors
Medically reviewed by Keri Peterson, MD
What Causes Older People to Wake Up so Early
Medically reviewed by Sanja Jelic, MD
Willis-Ekbom Disease: Causes of Restless Legs Syndrome
Medically reviewed by Chris Vincent, MD