Toxic Air in Aircraft

I have just viewed a programme about toxic air in aircraft due to fumes from engines entering the cabin.   I am curious to know how many cabin crew have Parkinsons.    I was an air stewardess for BA in the 70's and wonder if there is any research into this as there is no history of Parkinson's in my family.  I was flying in 747's long haul and now wonder if my career choice has given me PD.  Your views would be of interest.

Hi I remember reading about this in the Sunday papers ,check these sites

 http://www.beyondpesticides.org/dailynewsblog/2013/12/flight-attendant-links-airline-insecticide-use-to-his-parkinsons-disease/

 http://www.sundaypost.com/news-views/scotland/ex-stewardess-to-sue-airline-over-parkinson-s-claim-1.170393

hope these are useful