A Jolt Of Relief From Parkinson's Disease

Medtronic's pacemaker-like brain implant stops the shaking

For two decades, Howard Zirkle fought a losing battle against Parkinson's disease. The Minster (Ohio) diesel mechanic was forced to retire at age 55 because uncontrollable trembling of his arms and hands prevented him from steadying a screwdriver or wrench. At home, Zirkle needed his wife's help to button his shirt, pour his coffee, and brush his teeth. "It was very embarrassing," says Zirkle, now 72. "I would walk around with my hands in my pockets so people wouldn't see the shaking."

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