Researchers from CUSAT and SCTIMST, Thiruvananthapuram, find significant differences between gut bacteria of Parkinson’s patients and those of healthy individuals. Study links gut bacteria differences to Parkinson’s disease in Indian patients, suggesting gut health as a biomarker and treatment target. A new study has raised concerns over a previously overlooked factor that could be quietly affecting the effectiveness of treatment for Parkinson’s disease—the human gut microbiome.