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> We discovered, essentially accidentally, but via a test, that > the water > from a well in our friends vacation house > contained a large amount of Manganese, to the extent that a > black > deposit would form inside the > pipes and pump. Manganese has been implied as a causative > agent for PD. > Carline has it, I don't. > Also the exposure was relatively brief as we were there only > for various > holidays. It is probably not related > to Carline's PD because of the short exposures, but maybe it is > cumulative. Just a heads up. No > pesticides in that water. With manganese, one needs to distinguish between ingested and inhaled exposures. Ingested manganese is an essential nutrient. There is very little evidence of adverse neurological effects of ingested manganese. (See reference below.) On the other hand, there is massive evidence of Parkinson-like symptoms resulting from inhalation of manganese fumes or contaminated dust in occupational situations, such as miners and welders. These symptoms typically do not respond to the usual Parkinson's medications. For further information, see http://www.atsdr.cdc.gov/toxprofiles/tp151.html The first chapter is a relatively plain-language summary. For the evidence on neurological effects of ingested manganese, the discussion begins on page 114 of Chapter 2. ---------------------------------------------------------------------- To sign-off Parkinsn send a message to: mailto:[log in to unmask] In the body of the message put: signoff parkinsn