Understanding Your AHI Score: Mild, Moderate, Severe
Your sleep report came back with a mysterious number: AHI. What that index actually measures, what the severity bands mean, and why the number alone doesn't tell the whole story.
Key takeaways
- AHI counts apneas (complete pauses) and hypopneas (partial collapses) per hour of sleep.
- Severity bands: normal under 5, mild 5–15, moderate 15–30, severe above 30 events per hour.
- A severe score of 40+ means breathing stopped or nearly stopped more than once every 90 seconds all night.
- Oxygen desaturation levels matter as much as AHI — frequent drops below 88% indicate meaningful hypoxia.
- Symptoms and comorbidities guide treatment intensity: a 'mild' AHI with severe sleepiness may still warrant therapy.
What This Guide Covers
Your sleep report came back with a mysterious number: AHI. What that index actually measures, what the severity bands mean, and why the number alone doesn't tell the whole story. This guide walks you through what matters most, why it happens, and the practical steps with the best support behind them.
First, the foundation: aHI counts apneas (complete pauses) and hypopneas (partial collapses) per hour of sleep.
Next, the details: severity bands: normal under 5, mild 5–15, moderate 15–30, severe above 30 events per hour.
Then, the practical side: a severe score of 40+ means breathing stopped or nearly stopped more than once every 90 seconds all night.
Another angle worth knowing: oxygen desaturation levels matter as much as AHI — frequent drops below 88% indicate meaningful hypoxia.
Finally, the big picture: symptoms and comorbidities guide treatment intensity: a 'mild' AHI with severe sleepiness may still warrant therapy.
Frequently Asked Questions
What exactly is understanding your ahi score?
Your sleep report came back with a mysterious number: AHI. What that index actually measures, what the severity bands mean, and why the number alone doesn't tell the whole story.
How long until I see improvement?
Most of the strategies in this guide start showing effect within one to two weeks of consistent practice. Supplement- and device-based approaches vary more, so track your nights in a simple sleep diary and judge by weekly trends rather than single nights.
When should I see a doctor?
If the problem lasts more than a few weeks, disrupts your daytime functioning, or comes with warning signs such as breathing pauses, gasping during sleep, chest discomfort, or severe daytime sleepiness, it is time to consult a qualified healthcare professional rather than self-treating.