When discussing serious topics it's important to do real research first. There is very clearly a strong genetic component to Parkinson's Disease and the relevant genes have already been identified. Furthermore, there are three pre-symptomatic indicators of incipient Parkinsons: restless sleep, reduced olfactory sensitivity, and constipation. If all three occur within a 6-month period it is a very strong indicator that the patient will present with full-blown Parkinson's within a decade. As for the microbiome of the gut, it is presently unclear whether alteration in the microbiome is a causal factor or, instead, a consequent result of other metabolic changes. Given the strong genetic factors involved, the latter is more plausible than the former given what we presently know - the precise opposite of what this article claims.