Sleep apnea is a common sleep disorder in which breathing periodically stops and restarts during sleep. It has also been linked to mood disorders, especially depression. People with sleep apnea are almost twice as likely to also have bipolar disorder than the general population. Sleep apnea and bipolar disorder can be tied together in how mood is affected.

There are three kinds of sleep apnea.

-Obstructive sleep apnea is caused by...
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