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

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

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

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…

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…

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

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

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

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

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

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

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

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

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…

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

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

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…

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

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

Sleep Guidelines During the COVID-19 Pandemic
Three years into the COVID-19 pandemic, society is adapting to a new normal. Sleeping well…

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…

How to Stay Awake on the Road
Want to learn how to stay awake while driving? We cover the dangers of falling…

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

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…

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

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…

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…

Sleep, Athletic Performance, and Recovery
Time for recovery, rest, & sleep is an integral part of reaching peak athletic performance.…

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

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

Diagnosing Narcolepsy
Concerned that you have symptoms of narcolepsy? Learn about the tests and criteria used to…

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

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

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…

The Benefits of Waking Up Early
Waking up early may feel difficult for some people, but adjusting to an earlier sleep-wake…

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

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…

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

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

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…

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

Alzheimer’s Disease and Sleep
People with Alzheimer’s often experience insomnia and other sleep issues. Learn about causes and steps…

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

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

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…

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…

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

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

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…

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

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

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

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

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

How Memory and Sleep Are Connected
Lack of sleep can both short-term and long-term memory. It is also integral to memory…

Bedroom Environment: What Elements Are Important?
Want to learn how to create a bedroom environment for good sleep? Our guide includes…

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…

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

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

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

Light Sleeper: What It Means and What To Do About It
Are you a light sleeper? Find out what might be waking you up, and get…

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

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

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.…

Micrognathia and Obstructive Sleep Apnea
A person with micrognathia has a small lower jaw, leading to feeding and breathing difficulties,…









