I just received an email about asparagus for cancer. Interesting thing with it for PD is : that asparagus is the highest tested food containing GLUTATHIONE .....wow Something else to try. Email suggested a can of Green Giant or Stokes canned asparagus (drain) Place into blender to make puree & store in the refrigerator. Take 4 TBS am & PM ... sounds easy enough & is to help with cancers , too.