Shifts in gut bacteria may indicate early risk of Parkinson

Distinct Microbial patterns identified

The study, conducted by researchers at University College London, found that although each person has a unique gut microbiome, individuals with Parkinson’s disease — as well as those carrying genetic risk factors — show distinct microbial patterns compared to healthy individuals.

Study sample and data analysis

Researchers analysed data from 271 Parkinson’s patients, 43 individuals carrying the GBA1 gene variant linked to a higher risk of the disease, and 150 healthy participants.

Significant Microbial differences observed

The findings showed differences in more than a quarter of gut microbes between patients and healthy individuals. These differences were more pronounced in advanced-stage patients and were also evident in genetically at-risk individuals even before symptoms appeared.

Expert insight on gut–brain link

Professor Anthony Schapira, the study’s lead researcher, highlighted the growing interest in the connection between gut health and Parkinson’s disease. He noted that the findings reinforce this link and may support earlier detection of the disease, potentially years before symptoms develop.

Implications for early detection and prevention

Researchers added that the findings could contribute to the future development of early screening tools for Parkinson’s risk. They also pointed to the potential for preventive strategies focused on improving gut microbiome balance, such as dietary changes or targeted therapies.