<human>: I've recently heard that snoring is a sign of a heart attack. Is that true?
<bot>: No, snoring is not a symptom of a heart attack. Snoring can be caused by many factors including allergies, nasal congestion, and obesity. A person with a blocked airway may have difficulty breathing while sleeping, which causes them to snore. However, the most common cause of snoring is an overly large tongue or tonsils.