Snorers beware

Saturday, January 31, 2009

WASHINGTON--Sleep apnea can cause stroke by decreasing blood flow, raising blood pressure and harming the brain’s ability to modulate these changes, Reuters reported in January. A team at Yale University tested the blood pressure of 48 middle-aged men and women - 22 of whom had sleep apnea - while they were squatting and then standing suddenly. Researchers found that the patients with sleep apnea had more difficulty compensating for the change in blood pressure, resulting in decreased blood flow to the brain.