Why Do I Snore? Common Causes and What Might Help

Maybe a partner mentioned it, or you heard it for the first time on a recording, or it’s just something that’s gotten noticeably louder lately. However it came up, the question is the same: why does this happen, and is it worth doing anything about?

This article covers what commonly contributes to snoring, a few reasonable things worth trying, and when it’s worth bringing up with a doctor. If the actual problem is coping with someone else’s snoring, our guide to blocking out nighttime noise covers that instead.

How Common Is Snoring?

Snoring is common. Exactly how common varies quite a bit depending on how it’s studied and who’s included, so no single number tells the whole story. Being common doesn’t mean every case deserves the same amount of attention — what matters more than how often snoring happens is what else comes with it.

What Actually Causes Snoring?

Snoring happens when air has to squeeze through a narrowed airway during sleep, and the relaxed tissue along the way — the soft palate, the tissue at the back of the throat, sometimes nearby structures — vibrates as air moves past it. That vibration is the sound you hear. Because muscle tone throughout the body relaxes during sleep, the same airway that stays open easily while you’re awake can narrow enough to vibrate once you’re asleep.

What Can Make Snoring Worse?

A handful of everyday factors are commonly linked to snoring becoming more frequent or more noticeable. None of them apply to everyone, and which ones matter can differ from person to person.

• Sleep position. Sleeping on your back lets the tongue and surrounding tissue settle toward the airway, narrowing it further. Side sleeping is often associated with less snoring, though the effect varies from person to person.
• Alcohol. Evening alcohol, especially close to bedtime, is commonly linked to worse snoring — a meta-analysis of controlled trials found it measurably worsens breathing during sleep, with larger effects in people who already snore. See Alcohol and Sleep for more on the evidence. The usual explanation — that it relaxes muscles supporting the airway — is likely only part of the picture; researchers haven’t fully settled on the mechanism.
• Nasal congestion. A blocked or congested nose, from allergies, a cold, or another cause, can contribute to snoring by making it harder for air to move through the nose normally.
• Body weight. For some people, extra tissue around the neck and airway is a genuine contributing factor, and weight-related change can improve snoring where excess weight is actually part of the picture. It’s one factor among several, not something that applies to everyone who snores.
• Age and smoking. Snoring becomes more common with age, likely tied to gradual changes in airway muscle tone. Smoking is also associated with snoring. Both are secondary contributing factors.

Things Worth Trying

A few low-risk things are worth testing for yourself. None of them are guaranteed, and none of them are a substitute for medical evaluation if the breathing-related warning signs or daytime sleepiness described below apply to you.

• Sleep on your side instead of your back. It may help reduce snoring, though how much varies from person to person.
• Cut back on alcohol in the evening, especially close to bedtime, and see whether it makes a difference.
• Pay attention to nasal congestion. If snoring tracks with allergy season, a cold, or ongoing congestion, addressing that congestion is a reasonable place to start. If the obstruction is persistent rather than occasional, it’s worth mentioning to a healthcare provider.

When Snoring Is Worth Paying Attention To

Certain patterns are worth discussing with a healthcare provider, and it’s the pattern that matters more than how loud the snoring sounds. Louder snoring doesn’t necessarily mean a more serious problem, and quieter snoring doesn’t necessarily mean everything’s fine.

Snoring can occur alongside obstructive sleep apnea, but diagnosing and treating that is something only a healthcare provider can do. If what you’re dealing with is ordinary daytime tiredness rather than nodding off or struggling to stay awake, Why Am I Still Tired After 8 Hours of Sleep? covers the wider range of possible explanations.