Dorothy, I don't have PD, but I fear I could inherit the tendency, so I try to be careful of suspicious ingredients, etc. I found that when i stopped using Nutrasweet, which was maybe 6-8 packs a day, I saaw an improvement in my memory abilities. I am 54, so I thought the normal aging process caused me to forget things, but I now blame the Nutrasweet for at least part of it. After seeing more and more claims about the bad things it can do, I am glad I quit. [log in to unmask]