The department of

Diagnosis

Sleep disorder diagnosis covers sleep studies, polysomnography, and at-home tests — field notes, expert interviews, and reader accounts of the process here.

Pieces 6
A close-up photorealistic shot of a printed sleep study report resting on a dark…
Sleep Apnea June 2026 · 6 min

Sleep Apnea Severity Is a Number — and the Number Is Stranger Than It Looks

There is a number on your sleep study, and it probably has a decimal point. Maybe it says 27.4. Maybe 8.1, or 62.0.

By Rachel Stanton · Read →
A photorealistic portrait of a young woman in her mid-twenties lying awake in a…
Sleep Apnea June 2026 · 6 min

When the Influencer Has Sleep Apnea Too: What Celebrity Disclosure Gets Right, and Where It Falls Short

Somewhere tonight, a 26-year-old who follows a model she trusts will watch a video that opens with a confession: I have sleep apnea, and I had no idea.

By Judith Hawthorn · Read →
A serene modern sleep laboratory at night with an empty neatly made hospital-style bed…
Sleep Apnea June 2026 · 10 min

Sleep Apnea Classification: What "Moderate" Actually Means When You're Stuck Between Mild and Severe

You've read the article about mild sleep apnea, the one that said you'd probably be fine with some weight loss and a different pillow.

By Elliot Carver · Read →
A close-up overhead photograph of a middle-aged person sleeping on their back in a…
Sleep Apnea June 2026 · 6 min

Sleep Apnea Classification: What "Mild," "Moderate," and "Severe" Actually Measure

A sleep-study report lands in your inbox with a single number doing most of the work: AHI 11. Somewhere on the page, a clinician has written "mild obstructive sleep apnea." Had the number been 15…

By Megan Caldwell · Read →
A close-up photorealistic photograph of a single printed sleep study report resting on a…
Sleep Apnea June 2026 · 5 min

The AHI of 47: What One Number on My Sleep Study Actually Measured

My home sleep test came back with an AHI of 47. That number sat at the top of a one-page PDF, above a graph of my oxygen saturation that looked like the readout from a failing engine.

By Judith Hawthorn · Read →
A close-up photorealistic shot of a sleeping middle-aged man lying on his back in…
Sleep May 2026 · 5 min

The Apnea-Hypopnea Index Is a Number, Not a Verdict: How One Threshold Came to Define Sleep Apnea

If you ever get tested for sleep apnea, your night will be reduced to a single number. It is called the apnea-hypopnea index, the AHI, and it counts how many times an hour your breathing stops or…

By Judith Hawthorn · Read →