Dear Dr Chew, We have a brain donation scheme operating here and one of the papers covered by post-mortem dissection showed consistently low levels of magnesium and zinc, and co-existent high levels of copper and iron. There was no data on whether the post-mortem levels were a partial cause of PD, or were deposited as a result of PD. Jim (Dr James F Slattery, PhD Soc Sc) ---------------------------------------------------------------------- To sign-off Parkinsn send a message to: mailto:[log in to unmask] In the body of the message put: signoff parkinsn