Call it a flimsy silver lining to a noxious blue cloud: Long-term smokers have half the risk of Parkinson’s disease that nonsmokers do, according to a new report.
In 12,000 people studied, those who smoked the most—the equivalent of at least a pack a day for 60 years—had the lowest risk. And after smokers stubbed out their last butts, the protective effect faded.
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