Proposed mechanisms of neuroprotection for nicotine in Parkinson's disease.

developed a PD mendelian randomization research portal that investigated a large number of exposures, finding a nominally significant inverse association between smoking and PD 23 Domenighetti et al. identified an inverse association between smoking initiation and PD that was not explained by reverse causation, confounding, or survival or incidence-prevalence biases. 25 Further supporting the inverse relationship between

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