Parkinsons disease effects on other body systems?

hello if anyone can help me i'd really appreciate it. i am wondering if you have seen any significance to decreased activity in other body systems with patients having a dx of parkinson's. i read in this journal a href="http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1766335" rel="nofollow"http://www.pubmedcentral.nih.gov/article…/a that pulmonary abnormalities ensue d/t parkinson's patients...but i am unsure as to why. can you please explain any findings you have experienced as a clinician on the effects of the disease in a nutritional manner too? anything will help me :)