Those who were employed to work night shifts had a lower chance of developing Parkinson’s disease. Risk decreased with increasing years of night shift work. Parkinson’s disease and night shift work both affect large numbers of people in the UK; the research provides some reassurance that a causal link between them will not be established.
Evidence from:
H Chen et al. Am J Epidemiol (2006) Vol.163(8) p 726 – 730
“A Prospective Study of Night Shift Work, Sleep Duration, and Risk of Parkinson’s Disease”
Further detail: