An Italian study has found that a significant percentage of Alzheimer’s patients suffer from Obstructive Sleep Apnea Syndrome. This respiratory disorder, which causes people to temporarily stop breathing during their sleep, affects cerebral blood flow, promoting cognitive decline. The finding adds to evidence that detecting and treating OSA early is important for preventing cognitive decline and dementia.

http://www.eurekalert.org/pub_releases/2013-10/ip-apn100813.php

Buratti, L. et al. 2013. Vascular Impairment in Alzheimer’s Disease: The Role of Obstructive Sleep Apnea. Journal of Alzheimer's Disease, 38 (2), 445-53.