more than one cause
My personal pet theory is that it is mostly the repeated drop in oxygen-carrying capacity of the blood during repeated doses of chemo that causes enough damage to the brain to result in "chemobrain".
I'm not sure what happens with continuing traztuzumab or with continued estrogen deprivation. It sure would be nice to see whether anyone is looking into it seriously so that maybe they could find a way to soften the net effect, because most of us will be around for a long, long time, and we already know that even more memory loss is common with aging.
AlaskaAngel
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