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As people around the world live longer, maladies of old age are becoming more common. And that has doctors searching for ways to treat or prevent diseases like Parkinson's...a degenerative brain condition that usually develops after age 50, and that's known for its disabling physical tremors. Medications today can treat the symptoms of Parkinson's, but researchers are hopeful that soon, there will be a way to halt its devastating advance.
Sarah Taylor knew something was very ...