This is not the team's first paper on the desulfovibrio hypothesis. Their earlier 2021 paper, "Desulfovibrio Bacteria Are Associated With Parkinson’s Disease" e

This is not the team's first paper on the desulfovibrio hypothesis. Their earlier 2021 paper, "Desulfovibrio Bacteria Are Associated With Parkinson’s Disease" explains why they're looking at this: > Conventional and quantitative real-time PCR analysis of feces from twenty PD patients and twenty healthy controls revealed that all PD patients harbored Desulfovibrio bacteria in their gut microbiota and these bacteria were present at higher levels in PD patients than in healthy controls. Additionally, the concentration of Desulfovibrio species correlated with the severity of PD. Desulfovibrio bacteria produce hydrogen sulfide and lipopolysaccharide, and several strains synthesize magnetite, all of which likely induce the oligomerization and aggregation of α-synuclein protein. The substances originating from Desulfovibrio bacteria likely take part in pathogenesis of PD. Three of the researchers work for the Department of Microbiology at the Faculty of Agriculture and Forestry, University of Helsinki. Presumably they're interested in Parkinson's because farmers are known to have a much higher risk of PD than the general population? [1] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8126658/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8126658/