A recent study appears to show that "sleep-disordered breathing" accelerates the onset of "mild cognitive impairment" by at least 11 years.

http://acsh.org/2015/04/study-shows-that-snorers-vulnerable-to-earlier-cognitive-decline-why/

Before Bariatric surgery, my wife said I snored so much that it would keep her awake all night long. This condition went on for years. But within a few weeks after my RNY the snoring stopped. Sometimes I would wake up in the middle of the night and find my wife standing over me. I was sleeping so quietly that she was trying to figure out if I was still alive. It is good to know that the loss of this condition (snoring) has a ripple effect to minimize the threat of Alzheimer's disease.

I have hopes that this will help me as well. I have severe sleep apnea (stop breathing on average every 30 seconds while I sleep) and severe snoring. I am currently on a bi-pap machine to help with this, which has helped a lot. I will let you know how it goes. My surgery is scheduled for Friday. Please wish me luck!

Wow. I was recently diagnosed with moderate sleep apnea during my pre op stage so my pulmonary doc won't clear me for surgery till I'm on the cpap machine for at least a month. Sigh. .. here's to brighter days ahead for us.