metabolic impairment of neurons (whatever that is) may be culprit: http://www.theyorker.co.uk/lifestyle/scienceand%20technology/12300 Ray Rayilyn Brown Past Director AZNPF Arizona Chapter National Parkinson Foundation ---------------------------------------------------------------------- To sign-off Parkinsn send a message to: mailto:[log in to unmask] In the body of the message put: signoff parkinsn