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Is loud snoring dangerous for my health?

Yes · Moderate evidence

Loud snoring is linked to serious health risks: hardening of the arteries, a higher chance of dying after a heart attack, and dangerous daytime sleepiness. If you snore loudly on a regular basis and feel tired during the day, get it checked by your GP.

Loud snoring is more than an annoying nighttime noise. In one study, 64% of heavy snorers had calcium build-up in the neck arteries, compared with 20% of light snorers. Even after accounting for age, smoking and high blood pressure, a strong link remained. This suggests that heavy snoring is an independent risk factor for heart and blood vessel disease.

The heart risks go beyond hardening of the arteries. Among 1,660 patients who had suffered a first heart attack, heavy snorers died more than three times as often within 28 days compared with non-snorers. This held true after accounting for obesity, diabetes, high blood pressure and smoking. Chronic heavy snoring is also linked to irregular heart rhythms, stroke and higher blood pressure.

You notice the effects during the day too. People who snore habitually are nearly six times as likely to be dangerously sleepy in active situations, according to a large population study of 1,186 people. A Swedish study following people for ten years found that male heavy snorers were twice as likely to have a workplace accident; for women, the risk was at least three times as high. Difficulty concentrating, irritability and depression are all part of the broader picture of untreated sleep apnoea.

Drinking less alcohol demonstrably helps. Both a large British genetic study (more than 383,000 participants) and a Chinese study (more than 11,000 participants) found that each additional drink per day increases the likelihood of snoring by around 14%. Heavy drinkers had a 38% higher chance of snoring than non-drinkers. The link is considered likely to be a true cause-and-effect relationship, meaning that drinking less really can make a difference.

Do you feel sleepy during the day or have other complaints? International guidelines recommend a full sleep study in that case to rule out sleep apnoea. The standard treatment for confirmed sleep apnoea is air pressure therapy (CPAP), a mask that keeps your airway open at night. Ask your GP for a referral to a sleep clinic.

The evidence
8 studies · 1 randomised trial · ≈ 412,319 participants

All claims are based on the studies provided. The evidence is largely associative, meaning it shows links rather than definitive proof of cause and effect. For the alcohol connection, there is stronger evidence for a true causal relationship through a genetic research method. Whether snoring itself directly causes damage to the heart and blood vessels is considered likely but has not yet been definitively proven in studies where participants are randomly assigned to groups.

Last checked: October 2026 · how this was judged
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