Sleep Apnea Linked to Higher Cancer Death Risk

Sleep apnea has already been linked to a host of adverse health problems, such as high blood pressure and heart disease. Now, new research suggests that in people who already have cancer, the sleep disorder may raise their risk of dying from cancer.

People with the most severe sleep apnea -- those who have 30 or more episodes of low or no oxygen in an hour of sleep -- had almost five times the risk of cancer death compared to someone without sleep apnea.

"Sleep apnea is the periodic pausing of breathing during sleep that results in drops in oxygen levels in your blood. It causes snoring and sleepiness during the day," explained study author Dr. Javier Nieto, chair of the department of population health sciences at the University of Wisconsin School of Medicine and Public Health, in Madison.

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