Learn & Resources
Evidence-based sleep medicine,written by physicians.
Over 240 guides on sleep apnea, home sleep testing, CPAP therapy, and the comorbidities that make untreated sleep disorders dangerous. Every article is written or reviewed by our board-certified sleep medicine team.
1994
Practicing sleep medicine since
300K+
Patients tested at home
100+
Insurance plans accepted
24h
Typical test interpretation
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Most-used resources
If you are new here, these four resources answer 80% of questions we hear from patients.
What Is Sleep Apnea?
Causes, symptoms, health risks, and treatment options explained by physicians.
Epworth Sleepiness Scale
8-question self-assessment. Get your daytime sleepiness score in 2 minutes.
Frequently Asked Questions
Insurance, costs, what to expect, and how home sleep testing actually works.
Device Setup Guides
Step-by-step instructions for NightOwl, Dream, and ApneaLink home test devices.
Browse by topic
Sleep medicine, organized
Six topic clusters covering every question a patient typically asks before, during, and after a home sleep test.
Sleep Apnea Basics
Symptoms, diagnosis, types of sleep apnea, and when to get tested.
Home Sleep Testing
How HSAT compares to in-lab studies, accuracy data, and what your results mean.
CPAP & PAP Therapy
Machine types, mask fitting, side-effect fixes, and adherence troubleshooting.
Sleep & Heart Health
The cardiovascular link — hypertension, AFib, and stroke risk in untreated OSA.
Comorbidities
Diabetes, GERD, anxiety, weight gain — how sleep apnea connects to other conditions.
Insurance & Coverage
Medicare, commercial plans, prior authorization, and cost-of-care guides.
Editorial standards
Why our guides cite the studies they reference
Search results for sleep medicine are dominated by content marketing from device vendors, supplement companies, and SEO farms. Most of what ranks on the first page isn't wrong, but it's usually shallow — and occasionally dangerous. Patients acting on bad information delay diagnosis by months or years.
Every article on this site is written or reviewed by our board-certified sleep medicine physicians. Specific claims (prevalence rates, treatment efficacy, drug interactions, surgical success rates) are cited to primary sources: AASM clinical practice guidelines, ACP recommendations, peer-reviewed studies in Sleep, CHEST, and JAMA, and FDA-approved device documentation.
When something is uncertain, we say so. When the evidence has changed in the last few years (Inspire therapy outcomes, GLP-1 effects on OSA, central apnea management), we update the article and date the update.
Board-certified review
Every guide is signed off by a physician credentialed in sleep medicine.
Primary sources cited
AASM, ACP, peer-reviewed journals, and FDA device documentation.
Updated regularly
Articles are revisited when major studies, guidelines, or devices change.
Written for patients
Plain language, no jargon, no scare tactics. Real questions, real answers.
Recently published
New on the blog
Article
Can Sleep Apnea Cause Depression? The Bidirectional Link, Clues, and Next Steps
Sleep apnea and depression share symptoms and each raises the risk of the other. Learn why OSA is missed in depressed patients, what treatment changes, and where to get help.
Read articleArticle
Asthma and Sleep Apnea: Why Nighttime Symptoms Overlap—and When to Test
Asthma and sleep apnea worsen each other in both directions — clinicians call it alternative overlap syndrome. Learn how to tell nighttime symptoms apart and when to test.
Read articleArticle
Deviated Septum vs. Sleep Apnea: What a Blocked Nose Can—and Can’t Explain
A deviated septum blocks the nose; sleep apnea collapses the throat. Learn how they differ, why septoplasty rarely cures apnea, and how nasal surgery can still improve CPAP.
Read articleArticle
Can a Pulse Oximeter Detect Sleep Apnea? What Overnight Oximetry Can—and Can’t Tell You
A pulse oximeter shows overnight oxygen dips and an ODI, but it cannot diagnose sleep apnea. Learn what the 3% and 4% rules mean, where oximetry fails, and when to test properly.
Read articleArticle
Waking Up Gasping for Air: Is It Sleep Apnea, Reflux, Anxiety, or Something Else?
Waking up gasping can signal sleep apnea, but reflux, laryngospasm, heart failure, asthma, and panic cause it too. Learn which clues separate them and when it is an emergency.
Read articleArticle
Night Guards for Bruxism: Stopping Sleep Teeth Grinding
Bruxism is unconscious teeth grinding or jaw clenching, often during sleep, that can wear teeth and cause jaw pain and headaches. A custom night guard protects the teeth, while managing stress and treating any sleep apnea addresses the triggers. It often occurs alongside sleep apnea.
Read articleReady when you are
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