25 Jun 2015 Blackmores Institute Parkinsons disease may begin in the gut new research 25 Jun 2015 Share Share on LinkedIn Share on Facebook Share on Twitter Share on Google+ Share on Pinterest News New, ground breaking research indicates that Parkinson's disease may begin in the gastrointestinal tract and spread through the vagus nerve to the brain. The major epidemiological registry-based study from researchers at Aarhus University and Aarhus University Hospital in Denmark, is the largest in the field so far. × To continue reading this article, please Log In or Sign Up for access.