Topic · 6 articles

Sleep apnea & sleep testing

Loud snoring, waking up gasping, morning headaches, and feeling exhausted despite a full night are all reasons people first hear the words “sleep apnea”. This section explains the condition in plain language and demystifies the testing process.

Nothing here diagnoses anything. It is meant to help you have a better-informed conversation with your own doctor.

A woman asleep on her side wearing a CPAP mask connected to a bedside machine

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Quick answers

What is obstructive sleep apnea?

Obstructive sleep apnea (OSA) is a condition in which the upper airway repeatedly narrows or closes during sleep, causing pauses in breathing and brief awakenings. It is diagnosed with a sleep study and is commonly treated with positive airway pressure (CPAP), oral appliances, positional therapy, or other options chosen with a clinician.

What is the difference between a home sleep test and an in-lab sleep study?

A home sleep apnea test (HSAT) records breathing, oxygen levels, and heart rate overnight in your own bed and is used when obstructive sleep apnea is suspected. An in-lab polysomnogram (PSG) records many more signals, including brain activity, and is used for more complex cases or when a home test is not suitable.

All articles in Sleep apnea & sleep testing

6 min read

Snoring: When It Matters and What Helps

Why adults snore, what makes it worse, the red flags that point to sleep apnea, when to see a doctor, and the measures that quiet simple snoring.

6 min read

Are Sleep Trackers Accurate?

Sleep trackers estimate sleep from movement, heart rate and oxygen. Learn what they get right, where they fall short, and when a sleep study is needed.

4 min read

10 Lifestyle Changes That Help Sleep Apnea

Weight, side-sleeping, alcohol, smoking, nasal congestion and more — the lifestyle habits that support sleep apnea care, with the evidence behind each.

4 min read

At-Home Sleep Apnea Tests Explained

How a home sleep apnea test works, what it measures, who it suits, who needs an in-lab study instead, and what results mean — explained without the sales pitch.

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