hi again barb i believe that a head trauma and an exposure to pesticide triggered or caused my pd back in 1981 the pesticide exposure was immediately followed by a loss of my sense of taste for several hours [which my neuro later seemed to think was a severe reaction] however, i have not noticed any loss of my old factory abilities [or my new factory abilities either, for that matter] in all the time that i have had pd i found another very technical study in my archives about testosterone and rats and olfactory dysfunction which i can send in, if you really want me to! can you tell i'm procrastin-aching about packing? your cybyr sys in silliniss janet janet [log in to unmask]