Rob - in our industry we call it "junk science" - there is alot of it out there. Confession: my husband had all his amalgam replaced with gold (my inheritance I'm told!). see www.junkscience.com - just for fun. Sometimes I think it goes overboard too. ---------------------------------------------------------------------- To sign-off Parkinsn send a message to: mailto:[log in to unmask] In the body of the message put: signoff parkinsn