Hi! I can't give you any concrete evidence, but I have heard before that MG can affect memory a bit. I've noticed my spelling has worsened significiantly since diagnosis and I also occasionally have struggled to use the correct word when speaking (there is an actual name for this but funnily enough - I can't think of it right now)! I can't figure out WHY MG would affect memory - as far as I know the neuromuscular junction doesn't have anything to do with memory but my neuroscience knowledge doesn't go far enough to comment. I'm not on CellCept, so I can't attriubute my bad memory to that. As far as attributing it to age I'm only 29! Sorry I couldn't be of more help. I hope someone else has more info for you!
~Kathy