From UCLA
Using new computer mapping tools, detailed interviews and state records, researchers have put together disturbing new data about potential links between agricultural chemicals, especially the pesticide paraquat and the fungicide maneb, and the prevalance of Parkinson's in older adults. Exposure to these chemicals occurred when the individuals were children and teens and lived near farms sprayed with maneb or paraquat to protect crops in the fertile Central Valley. Early exposure increases by four- to six-fold the risk of the degenerative nervous system disorder; Central Valley residents who lived within 500 yards of fields sprayed with the chemicals had a 75 percent increased risk of the ailment. It had been known that rural farmers had higher incidences of Parkinson's but the pesticide link had been harder to track. But this study employed computer mapping techniques and careful follow up, especially with surveys and interviews. The study also suggests that the two chemicals also interact to increase the Parkinson's risk.
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