A few other websites have now written articles covering this research paper. I found the following articles to be of interest, particularly as they include expert commentary from independent researchers.

AlzForum article: Treat IBD, Dodge PD? Epidemiology Ties Parkinson’s to Inflammation.
Treat IBD, Dodge PD? Epidemiology Ties Parkinson’s to Inflammation | ALZFORUM

MEDPAGE TODAY article: Anti-TNF Cuts PD Risk in IBD
Anti-TNF Cuts PD Risk in IBD | Medpage Today

MANAGED HEALTH CARE CONNECT article: IBD Patients Treated With Anti-TNF Drugs Have a Lower Risk of Parkinson’s
https://www.managedhealthcareconnect...sk-parkinson-s