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Pick, The jump from genetic to environmental cause is logical since there are no other possible causes so far as I know. The jump to chemical is a probable since everything is made of chemicals either naturally or through man's intervention, but leaves open trauma - which is environmental but not chemical. There were few chemical pollinates in the early 1800's when Dr. Parkinson first described the shaking palsy which now bear his name. Here in our area we have two brothers who are identical twins. One worked in agriculture / horticulture all his life and has Parkinson's. The other twin worked in partnership in agriculture / horticulture with his twin, performing exactly the same tasks day after day, month after month, year after year as his brother and does not have any symptoms of PD. The term "idiopathic" is used with most Parkinson's disease. Simply and appropriately, it means we do not know what causes it. Will Johnnston A.P.D.A. DelMarVA Chapter Pres. 4049 Oakland School Road Salisbury MD 21804 USA 410-543-0110 ---------- From: Pick Mahaffey <[log in to unmask]> To: [log in to unmask] Subject: ENVIRONMENTAL CHEMICALS CULPRIT FOR VAST MAJORITY OF PARKINSON'SDISEASE VICTIMS Date: Thursday, May 11, 2000 5:02 PM Now, recent evidence indicates that most Parkinson's cases result from environmental chemical pollutants. The researchers reported that, "No genetic component is evident when the disease begins after age 50 years. However, genetic factors appear to be important when [Parkinson's] disease begins at or before age 50." Thus fewer than 10% of Parkinson's cases -- only those that begin relatively early in life -- have a genetic component. That leaves environmental chemicals as the culprit for the vast majority of Parkinson's, according to the researchers who conducted the twin study. In announcing their results, they specifically pointed out that the search for causes of Parkinson's should now re-focus on environmental chemicals such as pesticides and herbicides.[10] http://www.flipside.org/vol2/feb99/99fe03a.htm for full study article. Works for me. The wife is paranoid about cockroaches. Terminix kept our house steeped in pesticides for 25 years. No cockroaches at all tho'. Every appliance I pulled for repair has an eighth of an inch of powdered pesticide on it. My PD occurred at age 70. dx 69.