Anis Rehman, MD
Medical Reviewer

Biography
Dr. Anis Rehman is a board-certified endocrinologist and internist specializing in endocrinology, diabetes, metabolism, and obesity medicine. He earned his medical degree from Dow Medical College before completing his internal medicine residency at Cleveland Clinic Akron General and fellowship training in endocrinology, diabetes, and metabolism at the University of Cincinnati.
Throughout his career, Dr. Rehman has combined clinical care, research, and medical education, serving in academic leadership roles and helping train future physicians. He has authored more than 90 research publications and over 20 medical textbook chapters, reflecting his commitment to advancing evidence-based care for endocrine and metabolic disorders.
Outside of medicine, Dr. Rehman enjoys traveling, landscape photography, and spending time with his family.
Education
- Medical Degree: Dow University of Health Sciences
- Residency: Cleveland Clinic Akron General
- Fellowship: University of Cincinnati
- Board Certifications:
- Internal Medicine — American Board of Internal Medicine
- Endocrinology, Diabetes and Metabolism — American Board of Internal Medicine
- Obesity Medicine — American Board of Obesity Medicine
Read Articles Reviewed by Dr. Rehman

Micrognathia and Sleep Apnea
Micrognathia is a small lower jaw that can cause feeding and breathing problems, including sleep…

Light Sleeper
Light sleepers wake easily from noise, light, and other disturbances. Learn what causes light sleeping…

Athletes and Sleep
Sleep is essential for athletic performance and recovery. Learn how sleep affects athletes, how much…

How to Diagnose Narcolepsy
Diagnosing narcolepsy involves evaluating symptoms and specialized sleep testing. Learn about sleep studies, diagnostic criteria,…

Benefits of Waking Up Early
Waking up early may benefit your mood, performance, and daily routine. Learn the potential benefits…

Kleine-Levin Syndrome
Kleine-Levin Syndrome is a rare hypersomnia disorder that primarily affects teenage boys. Learn about symptoms,…

Sleep and Memory
Sleep plays an important role in learning and memory. Learn how sleep helps your brain…

How to Stay Awake While Driving
Drowsy driving can put you and others at risk. Learn how to stay alert behind…

Bedroom Environment
Your bedroom environment affects how well you sleep. Learn how temperature, noise, light, bedding, and…

Sleep Guidelines During the COVID-19 Pandemic
COVID-19 can disrupt sleep through illness, stress, and changes to daily routines. Learn how the…

Alzheimer’s and Sleep
Alzheimer’s disease can cause significant changes in sleep patterns. Learn why sleep problems occur, common…

Chronotypes: Definition, Types, & Effect on Sleep
Your chronotype dictates whether you are a night owl or an early bird. Understanding your…

Microsleep
Microsleep causes brief, involuntary episodes of sleep that may last only seconds. Learn the signs,…

Relaxation Exercises for Sleep
If stress is keeping you awake at night, try these gentle relaxation exercises to calm…

How to Fall Back Asleep After Waking Up
Waking up during the night is common. Learn why it happens and get practical tips…

Diagnosing Insomnia
Learn how doctors make an insomnia diagnosis, including the symptoms and criteria they look for,…

Causes of Excessive Sleepiness
Excessive sleepiness can have many causes, from sleep deprivation to health conditions. Learn why you…

Teeth Grinding in Children
Teeth grinding is common in children and often happens during sleep. Learn why kids grind…

How to Set Up a Bedroom for Better Sleep
Create the ideal bedroom for sleep by optimizing temperature, light, noise, air quality, bedding, and…

Melatonin and COVID
Can melatonin help with COVID-19? Learn what research says about melatonin for COVID prevention, treatment,…

Is Sleeping on the Floor Good for You?
Are you considering sleeping on the floor? Learn the potential benefits and drawbacks, who should…

Biphasic Sleep
Biphasic sleep describes sleeping in two segments a day. Learn about potential benefits and drawbacks,…

Best Humidity Level for Sleeping
The best humidity level for sleeping is typically between 30% and 50%. Learn how humidity…

Insomnia
Insomnia affects millions of people worldwide. Learn about the symptoms, causes, diagnosis, and treatment options…

What Causes Poor Sleep Quality?
Poor sleep quality can affect your health, mood, and energy. Discover what causes restless, unrefreshing…

Insomnia in Seniors
Insomnia is common among older adults, but it isn't an inevitable part of aging. Learn…

How to Get a Good Night's Sleep
Proper sleep is an essential part of human functioning. Find out how much sleep you…

Nocturnal Asthma
Nocturnal asthma can cause coughing, wheezing, and shortness of breath at night. Learn why symptoms…

Meditation for Sleep
Meditation may help calm the mind and reduce stress before bed. Learn different techniques and…

Can Benadryl Make You Sleep?
Benadryl can cause sleepiness, but it may not be the best solution for insomnia. Learn…

Can You Sleep With a Concussion?
Sleep is an important part of concussion recovery, but certain symptoms require medical attention. Learn…

Drowsy Driving
Worried about nodding off behind the wheel? Learn about the dangers of drowsy driving and…

How Is Shift Work Disorder Diagnosed?
Learn how doctors diagnose shift work disorder, including the role of sleep histories, sleep diaries,…

Tips for Coping With Shift Work Disorder
People with shift work disorder struggle to get enough sleep and stay alert on the…

Shift Work
Shift work can disrupt your body's natural sleep-wake cycle. Learn about common shift schedules and…

Shift Work Disorder
Shift work disorder can cause insomnia and excessive sleepiness in people who work nontraditional hours.…

How to Stay Awake
Struggling to stay awake? Learn practical tips for improving daytime alertness, from strategic caffeine use…

Dyssomnia
Dyssomnia describes the group of sleep disorders that negatively impact your quality and quantity of…

Catathrenia: Why Do I Moan in My Sleep?
Catathrenia is a rare sleep disorder causing you to groan in your sleep. Learn about…

Do Women Need More Sleep Than Men?
Do women need more sleep than men? We take a closer look at what the…

Non-24 Hour Sleep-Wake Disorder Symptoms and Diagnosis
Symptoms of Non-24 Hour Sleep-Wake Disorder include excessive daytime sleepiness and insomnia. Learn when to…

What Is Orthosomnia?
Orthosomnia involves an unhealthy preoccupation with sleep tracker data. Learn more about the problems orthosomnia…

Drowsy Driving vs. Drunk Driving
Drowsy driving is just as dangerous as drunk driving. Learn how sleepiness and alcohol compare…

Delayed Sleep Phase Disorder
Learn about delayed sleep phase syndrome, a circadian rhythm disorder that affects your ability to…

Nightmares in Children
Want to learn more about nightmares in children? Our guide discusses what causes nightmares in…

Can COVID-19 Cause Insomnia and Sleep Problems?
Sleep problems have grown during the pandemic. Learn about coronasomnia and the diverse ways that…

Why Do Naps Make Me Feel Sick?
After napping, do you wake up nauseous, sluggish, or out of sorts? Find out why…

Sleep Apnea Symptoms
Sleep apnea symptoms include snoring and daytime sleepiness. Learn more about the symptoms of this…

Can You Die From Sleep Apnea?
Sleep apnea is a sleep disorder that can be life-threatening if left untreated. Learn about…

Mouth Taping for Sleep: Does It Work?
Are there potential benefits to mouth taping for sleep? Learn more about why some people…

Alcohol and Sleep Apnea
Drinking alcohol is common, with roughly reporting that they’ve had a drink in the last…

Melatonin Dosage for Kids
Should you give melatonin to a child? Learn about dosage levels and what to consider…

APAP vs. CPAP
Obstructive sleep apnea may be treated using an APAP or CPAP machine. Learn the differences…

CPAP Alternatives: Sleep Apnea Treatments Without CPAP
Treating sleep apnea without CPAP can include lifestyle changes, using other devices, and surgery. Learn…

CPAP: Continuous Positive Airway Pressure
Continuous positive airway pressure (CPAP) therapy is often used to treat obstructive sleep apnea and…

Why Do You Yawn?
Scientists still do not know exactly why we yawn, but they have several theories. Learn…

How Long Should It Take to Fall Asleep?
Does it take you too long to fall asleep? Discover why some people fall asleep…

Beverages to Avoid to Sleep Soundly While Traveling
Want to avoid sleep problems on your trip? This guide outlines the beverages to seek…

Fetal Sleep Position
Struggling to get comfortable at night? The fetal position might just be what you need…

Best Sleeping Position for Neck Pain
Have you wondered what sleep position can help relieve neck pain? We discuss the best…

Music and Sleep
Music is a simple and easy way to improve sleep quality. Our guide explores music's…

What’s the Best Time of Day to Exercise for Sleep?
Experts once advised against exercise before bed, but research suggests a complex link between fitness…

The Best Exercises for Sleep
Want to learn about exercises to help you sleep? Our guide covers aerobic workouts, strength…

Narcolepsy Symptoms
Our guide to the symptoms of narcolepsy explores the causes and impact of each symptom…

Sleep Studies
Sleep studies can diagnose sleep disorders by monitoring breathing, movement, and other activity during sleep.…

Sleep Drive and Your Body Clock
How does your body clock affect your sleep drive? Learn how your circadian rhythm and…

How Age Affects Your Circadian Rhythm
Learn how the body's circadian rhythm changes as we age and how to improve sleep…

What Is a Siesta?
Considering an afternoon nap? Learn more about the origins and benefits of the siesta, and…

Sleep-Onset Association Disorder
Learn more about sleep-onset association disorder, a type of childhood insomnia. Understanding this condition can…

How Is Sleep Quality Calculated?
Unsure if you’re getting good sleep at night? Learn how to calculate your sleep quality…

Sleep Satisfaction and Energy Levels
Sleep satisfaction and energy levels are closely linked. In this guide, learn how sleep patterns…

Dementia and Sleep
Many individuals with dementia struggle with sleep concerns. Learn about how dementia affects sleep and…

How Long Does It Take for Caffeine to Wear Off?
Caffeine can energize you, but it can also make it hard to fall asleep. Find…

Dream Interpretation
The exact reasons we dream and the meanings of our dreams are still unknown. Learn…

Pain and Sleep
Sleep and pain share a bidirectional relationship. Learn how to improve your sleep if you're…

Obesity and Sleep
Obesity and sleep share a complex, cyclical relationship. Learn more about this relationship and ways…

How Does Soda Affect Sleep?
Do you drink soda during the day and struggle to sleep at night? We discuss…

The Connection Between Sleep Apnea and PTSD
As many as 90% of individuals with PTSD also suffer from sleep apnea. What explains…

Rest and Recovery: How to Sleep With Intercostal Muscle Strain
Intercostal muscle strain is a common sports injury. Learn strategies for how to sleep with…

How Long Does Melatonin Last?
Melatonin is a widely available and popular sleep aid. Learn more about how long melatonin…

Does NyQuil Make You Sleepy?
NyQuil helps relieve cold symptoms at night, but does it make you sleepy? Learn if…

Morning Headaches: Why Do I Wake Up With a Headache?
Morning headaches can be caused by a variety of triggers, from sleep disorders to lifestyle…

UPPP Surgery
Learn about UPPP, the most common surgery for obstructive sleep apnea, including benefits, usages, and…

Managing Excessive Daytime Sleepiness
Excessive daytime sleepiness can have serious effects on health and quality of life. Learn the…

The Connection Between Diet, Exercise, and Sleep
Diet, exercise, and sleep all contribute to a healthy life. We explore the relationships between…

L-Theanine for Sleep
Are you curious about L-theanine for sleep? Learn about potential health benefits and side effects…

Is Lucid Dreaming Dangerous?
Lucid dreaming occurs when you recognize you are dreaming while you are still in a…

How Long Do Dreams Last?
Have you ever wondered how long dreams last, or why some dreams seem much longer…

How Sleep Apnea Affects Blood Pressure
Learn about the relationship between sleep apnea and high blood pressure, how sleep apnea treatment…

How to Sleep When It’s Hot Outside
Do you have trouble sleeping when it's hot outside? Our guide offers tips on how…

Sleeping With the Lights On
Have you ever wondered the impacts of sleeping with the light on? Learn about the…

Sleep and Social Media
Using social media too close to bedtime can interfere with sleep. Our guide explores social…

Sleep Inertia: How to Combat Morning Grogginess
Do you wake up feeling groggy despite sleeping enough? Sleep inertia may be to blame.…

Hypnagogic Hallucinations
Hypnagogic hallucinations occur as you're falling asleep. They are generally harmless, though people with certain…

Sleep Spindles
Sleep spindles are a pattern of brain waves that occur during non-rapid eye movement sleep.…

Sleep Debt: The Hidden Cost of Insufficient Rest
Sleep debt grows when lost sleep accumulates over time. Learn about the effects of sleep…

How Your Body Uses Calories While You Sleep
Learn how many calories you burn during sleep, which sleep stages burn the most calories,…

Sleep Dictionary
Terminology about sleep can be confusing. Our sleep dictionary clearly explains common sleep terms so…

Oversleeping: How Much Sleep Is Too Much?
Oversleeping is sleeping longer than nine hours each night. Learn common causes and effects of…

REM Rebound: Causes and Effects
Learn more about the underlying mechanisms of REM rebound, a phenomenon in which a person…

Sleep Disorders
Visit the pages below to learn about different types of sleep disorders and their symptoms,…

Can You Sleep With a Tampon In?
A tampon can be worn during any activity, as long as safety guidelines are followed.…







