Many factors may contribute to airway blockage, from the size of passages and oral or airway structures to swelling of passageways or position of the tongue. Disrupted deep sleep can affect mood, health, and cause daytime sleepiness. The added stress and fatigue can cause lack of concentration, loss of memory, and accidents in the workplace or while driving. Other health risks include high blood pressure and heart problems, and even a risk of premature death. The patient’s snores can disturb a sleeping partner’s rest, too.