This seems to be presented like it is new news but I found this from 2016: https://news.ycombinator.com/item?id=13086908 https://news.ycombinator.com/item?id=13

This seems to be presented like it is new news but I found this from 2016: https://news.ycombinator.com/item?id=13086908 https://news.ycombinator.com/item?id=13086908 - Parkinson’s disease ‘may start in gut’ (bbc.co.uk)