I have heard this so many times and have never really known quite what it means - but I think I know now!
Since a heart attack (that needed a stent) and worsening of AF (that needed a pacemaker) I am now on several drugs designed to prolong my life by preventing deterioration in my heart.
We have done a lot of jiggling around with doses to try and achieve a good risk/benefit balance, but I truly feel as though someone has switched me off at the main - has gone to the wall and pulled out my plug.
Everything, even thinking, is effortful and requires girding up the loins and summoning some grit from somewhere.
Anyone else ever had brain fog?