A new study suggests that the bacteria in your gut could signal a risk for Parkinson's disease years before symptoms emerge. Researchers at University College London (UCL) identified specific patterns of gut bacteria in individuals with Parkinson's and those genetically predisposed to it.
"Gut microbes may serve as an early warning signal of Parkinson's risk years before symptoms begin," stated lead investigator Anthony Schapira from UCL. The research analyzed clinical and fecal data from participants in the UK and Italy, including individuals with Parkinson's, carriers of the GBA1 gene variant (which significantly increases Parkinson's risk), and healthy controls.
The findings indicate that over a quarter of gut microbial species differed between Parkinson's patients and healthy individuals. These same microbial differences were also observed when comparing healthy controls to GBA1 gene variant carriers who had not yet developed symptoms. This suggests a potential for early risk identification.
Parkinson's is the fastest-growing neurodegenerative disease. By the time motor symptoms appear, over half of dopamine-producing neurons are already lost. Early detection is crucial for the effectiveness of developing treatments.
"Gut microbiome analysis can enable us to identify individuals who are at risk of developing Parkinson's disease, so that we can suggest ways for them to reduce their own risk, such as through dietary adjustments," noted co-lead author Stanislav Dusko Ehrlich. Further research is ongoing to understand all contributing genetic and environmental factors.