Study Finds Gut Microbiome Could Predict Parkinson's Risk Early

A team of researchers in the United Kingdom has found that the gut microbiome, the collection of bacteria in our intestines, could help detect Parkinson's risk before symptoms show. The study, published in Nature Medicine, analyzed samples from 638 Parkinson's patients, 319 healthy controls, and GBA1 gene carriers without symptoms across the UK, Korea, and Turkey.

The scientists identified 176 bacterial species that differ between those with Parkinson and healthy individuals. They also found 142 species that vary between healthy volunteers and GBA1 carriers who haven't developed symptoms yet. These findings suggest that microbiome changes happen before clinical signs appear.

Lead researcher Anthony Schapira emphasized the importance of early detection. He explained that identifying at-risk individuals could improve treatment outcomes and potentially prevent disease progression. He also noted that these bacterial alterations are present in a small portion of the general population, which might link them to increased Parkinson risk.

The study involved collaboration with INRAE, the French agricultural research institute, and specialized centers in London and Italy. Results indicate that a balanced diet might lower bacteria associated with higher Parkinson risk, opening possibilities for preventive strategies through nutrition.

Stanislav Dusko Ehrlich, part of the team, mentioned that analyzing the gut microbiome helps identify those with higher risk and allows for lifestyle recommendations, such as dietary changes, to reduce that risk. They also observed that some healthy individuals have microbiome profiles similar to future Parkinson patients, highlighting how much remains to be understood about this connection.