People who suffer from chronic daily headaches appear to be nearly three times as likely to be habitual snorers as those who only get headaches once in a while, a new study suggests.

About four percent of adults have chronic daily headaches, which is usually considered to be headaches on at least 15 days per month.

The findings suggest that this type of headache may be related to a sleep-related breathing problem, of which snoring is a common symptom. Sleep disordered breathing, or sleep apnea, is a condition in which the upper airway collapses and temporarily halts breathing, causing the sleeper to snort and gasp for breath.

Previous research has demonstrated a link between breathing problems during sleep and cluster headaches — sudden, severe pain, often centered in one eye, which tends to be short in duration but runs in cycles.

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