> If two things were true of PD, that it increases with age and contributes > to > an earlier death than normal, then might we not find few if any cases of PD > in centenarians? > -Ken > in a way yes but you would have to take into account the ones starting around 80 years old and there doesn't seem to be many. so if you reach a ripe old age without PD, chances are you will not develop it although it is supposed to be an old age disease maryse (still without a computer) ---------------------------------------------------------------------- To sign-off Parkinsn send a message to: mailto:[log in to unmask] In the body of the message put: signoff parkinsn