Eagle Heart, I am so delighted to hear how much better you are feeling!

I had a similar experience once I was correctly diagnosed with sleep apnea. Apparently I had been experiencing it for so many years I thought it was natural. (Mine wasn't the typical snoring thing, I'd stop breathing in my sleep then startle awake.)

I finally got diagnosed after waking up in the middle of the night and finding myself standing in the bathroom, looking at myself in the mirror and trying to figure out why I could not inhale any air. (Apparently the sleep apnea had lasted long enough that my esophagus collapsed on itself and then wouldn't "pop" back open.)

Long story short, I had a bunch of tests including two nights in a sleep lab before they made my diagnosis. But since I began using my PAP (Positive Airway Pressure) machine (mine is a Bi-PAP because my situation is so severe) my daytime brain fog has cleared, I can drive without feeling like I am going to doze off, I can sit in a meeting without falling sleep, and I have so much more energy...

The rewards of having a reliable brain again and staying awake during the day are well worth the challenges related to having to wear the mask at night. In fact, I think I have gotten to the point where I CAN'T sleep unless the mask is in place...

So I would tell anyone who is living with a mind fog to try to find out if there could be some sort of health challenge that is causing your problem.
Boomer in Chief of Boomer Women Speak and the National Association of Baby Boomer Women.