Your memory is fine. I was a heavy Diet Pepsi user. I had joint pains and fuzzy vision.
However, I read all your literature and saw the memory loss issue. I was looking at myself to see what other effects I might have. I never experienced memory problems. The joint pain was the most obvious and serious. I had it for years. That is what the doctors, including orthopedic surgeons, kept attributing to my former sports and resulting arthiritis.
Within a week of stopping Diet Pepsi (about 4 liters a day), my hips felt much better. I have barely noticeable aches and only on occasion.
Before, there were days when I had difficulty moving around in the office.
I suppose the scientific thing to do would be to saturate myself with Aspartame again and see whether the hip pains recur. I am convinced that it was Diet Pepsi and don’t want the pain again.
I changed nothing else in my diet or activity and lack only the proof of causing the symptoms again. For me, experiential knowledge is enough.
The other symptom that disappeared may have been related too. In the summer when there was plenty of light from the upper window, I’d shower in the morning without switching the electric lights on. When I closed my eyes to rinse my hair, I’d see strobe-like flashes. They disappeared when I opened my eyes and did not recur in any other conditions. Those stopped with the hip pains.