I get worried too. I had untreated sleep apnea for upwards of 10 years (age 13 - 23). Each night my oxygen dropped to 85% or lower (this is what they recorded in the sleep study), and I woke up literally every minute for 10 seconds or more.

Scary to think about what my future holds, I know my attention span / memory sucks much more compared to when I was younger... anyways, I hope studies like these are wrong.