Sleep apnea is a sleep disorder in which people stop breathing many — sometimes hundreds — of times throughout the night, often for one minute or more. As a consequence, people with sleep apnea wake up several times each night, resulting in poor sleep and chronic tiredness. More than 12 million American adults are estimated to have sleep apnea, but most are undiagnosed. People with sleep apnea are at greater risk of having high blood pressure, heart disease, or a stroke.
The most common type of sleep apnea is obstructive sleep apnea, meaning that the airway is blocked or collapsed. Loud snoring results when air squeezes past the obstruction.
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