Has someone who sleeps next to you ever said, “You stopped breathing in your sleep”? Most people dismiss it. But that single observation is the most common first sign of Obstructive Sleep Apnea (OSA).

More Common and More Dangerous Than You Think

Sleep apnea is a condition where the airway repeatedly collapses during sleep, stopping breathing for 10 seconds or more. This isn’t just discomfort — it carries clear medical risks.

A large-scale study published in Frontiers in Neurology (Park et al., 2024) found that the cardiovascular disease prevalence in high-risk sleep apnea groups was 11.9%, compared to 3.0% in low-risk groups — roughly 4 times higher. Even after statistical adjustment, the high-risk group had a 2.05x higher cardiovascular disease risk (95% CI: 1.29–3.24).

A meta-analysis in JAMA Network Open (Nagappa et al., 2021) synthesized global data and reported that the prevalence of AHI ≥5 (mild apnea or worse) exceeds 50% in some populations. Yet according to the American Academy of Sleep Medicine, approximately 80% of patients remain undiagnosed.

The biggest problem: you don’t know it’s happening. Since it occurs during sleep, self-awareness is nearly impossible. A partner’s observation is often the only clue.

STOP-BANG: A 3-Minute Self-Screening

The most widely used sleep apnea screening tool in clinical practice is the STOP-BANG questionnaire. Answer Yes or No to eight questions:

S — Snoring: Do you snore loudly? (Loud enough to be heard through a closed door)

T — Tired: Do you feel tired, fatigued, or sleepy during the day?

O — Observed: Has anyone seen you stop breathing during sleep?

P — Pressure: Are you being treated for high blood pressure?

B — BMI: Is your Body Mass Index over 35?

A — Age: Are you over 50 years old?

N — Neck: Is your neck circumference greater than 40 cm (16 inches)?

G — Gender: Are you male?

3 or more “Yes” answers = high risk for sleep apnea. 5 or more suggests moderate-to-severe apnea is likely.

The sensitivity of this questionnaire is 89.1% for AHI ≥5 and 93.9% for severe apnea (AHI ≥30) (Nagappa et al., JAMA Network Open, 2021). In other words, it very rarely misses actual patients.

When to See a Doctor

Don’t delay visiting a sleep clinic if any of the following apply:

  • STOP-BANG score of 3 or higher
  • A partner has witnessed you stop breathing
  • Frequent morning headaches
  • Excessive daytime sleepiness despite adequate sleep duration
  • High blood pressure that doesn’t respond well to medication

At a sleep clinic, a polysomnography test measures your exact AHI. Home Sleep Apnea Tests (HSAT) are now available and often covered by insurance, making access easier than ever.

What You Can Do Today

Before scheduling a doctor’s appointment, there are steps you can take right now. First, answer the STOP-BANG questionnaire honestly. Then, record your sleep for 1–2 weeks to document snoring patterns and suspected breathing pauses. Using SnoreLess to record your sleep gives you objective data to show your doctor — recorded audio is far more useful than saying “I think I snore.”

Sleep apnea becomes more dangerous the longer it’s ignored, but it’s also a condition with well-proven treatment options once diagnosed. If someone has told you that you stop breathing at night, your body is sending you a signal.