Jana,

thanks for starting new thread!

And I agree totally with Alice about that research paper.

On brain fog: I think it can be related to degree of stress and fatigue - not just the chemical reactions in the body. And I think a certain 'dullness' begins to creep in when oxygen levels get challenged.

What I was experiencing wasn't a fog or an inability to think a word, but rather not being able to get the word from my brain to my mouth and out into the room!

Almost like somebody punched the pause button!...and everything just stops for a bit.

Probably doesn't make much sense - but that's the only way I can describe it.

Sue