A recent study published in the Neurology Journal found longtime smoking reduces the risk of developing Parkinson's disease.
The study looked at the lifetime smoking history of more than 300,000 people, and confirmed the inverse relationship between smoking and Parkinson's disease, established in earlier scientific studies.
But don't be so quick to light up those cig's.
Researchers say they've found a critical new piece to the puzzle: It appears to be the length of time one has been a smoker - not the number of cigarettes smoked - that has the most effect on disease risk reduction.
"Nobody should advocate smoking to prevent Parkinson's disease," Dr. Honglei Chen, the lead study author and a tenure-track investigator at the National Institute of Environmental Health Science, told CNN. "It's important to make that very, very clear."
Smoking continues to be the leading cause of preventable death in the United States and has been linked to an increase in heart-disease risk, stroke risk, and several types of cancers.