Here's something related: http://www.ncbi.nlm.nih.gov/pubmed/10857708 http://www.ncbi.nlm.nih.gov/pubmed/10857708 Definitely not "smoking", and not about preve

Here's something related: http://www.ncbi.nlm.nih.gov/pubmed/10857708 http://www.ncbi.nlm.nih.gov/pubmed/10857708 Definitely not "smoking", and not about preventing parkinson's. But it is one study that shows nicotine helps with some aspects of the disease.