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Sleep apnea

Sleep apnea is breathing that stops during sleep. The problem can be mild to severe, based on how often your lungs don't get enough air. Mild sleep apnea is when breathing stops 5 to 14 times an hour. Moderate sleep apnea is when breathing stops 15 to 29 times an hour. And severe sleep apnea is when breathing stops 30 or more times an hour.

There are two main types of sleep apnea. Obstructive sleep apnea is caused by blocked airways. And central sleep apnea is caused by a problem with how the brain signals the breathing muscles.

Sleep apnea can cause you to snore loudly. People with sleep apnea often have sleep problems and are tired during the day. And they are more likely to have high blood pressure and some heart problems.