Oral Microbiome Linked To Obesity And Metabolic Health, NYU Abu Dhabi Study

A study by NYU Abu Dhabi reports that shifts in oral bacteria appear linked to obesity and related metabolic disorders. The research suggests that the mouth’s microbiome might act as an early warning sign for such conditions. These results point to possible future tools that use oral bacteria to identify health risks sooner.

The project, backed by the Department of Health – Abu Dhabi, also aligns with wider precision health goals in the emirate. It supports approaches that blend genomic, clinical, biochemical, and metabolomic information. The aim is to guide more personalised care plans, with long-term benefits for individual wellbeing and disease prevention in the UAE.

Researchers examined data from 628 Emirati adults who participate in the UAE Healthy Future Study. Using advanced multi-omics methods, the team compared the oral microbiome of people with obesity to that of people without obesity. They reported one of the most detailed assessments so far of how mouth bacteria differ between these two groups.

The analysis revealed that participants with obesity tended to host distinct bacterial communities in the mouth. Microbes associated with inflammation appeared more common in this group, while bacteria linked with healthier metabolic activity were less frequent. The study also detected unique functional patterns among these oral microbes, hinting at different biological roles in metabolic processes.

Alongside the shifts in bacterial types, the researchers observed higher levels of certain metabolites in participants with obesity. These chemical by-products have been connected in previous work to weight gain and metabolic disease. Together, the altered bacteria and metabolites suggest that changes in the mouth may help drive inflammation and wider metabolic imbalance.

The study notes that such imbalance, sometimes described as metabolic stress, arises when normal metabolic activity is disturbed. This happens when energy needs or cell stability go beyond what the body can manage. The result is reduced cellular function and altered responses, patterns that often appear in people living with obesity and related conditions.

"Our findings highlight the mouth as an important, yet often overlooked, part of the body’s metabolic system," said Jha. "By studying how oral bacteria and metabolites differ in people with obesity, we can begin to understand how these microbes may influence inflammation and overall metabolic health. This opens new possibilities for early detection and prevention strategies focused on the oral microbiome."

Aashish Jha is Assistant Professor of Biology and Co-Principal Investigator at the Public Health Research Center at NYU Abu Dhabi. The work appears in the journal Cell Reports. The Department of Health – Abu Dhabi describes the study as part of broader life sciences development and precision health efforts in the emirate.

Dr. Asma Al Mannaei, Executive Director of the Health Life Sciences Sector of the Department of Health – Abu Dhabi (DoH), said: "Abu Dhabi continues to prioritise the development of a strong life sciences ecosystem that enables scientific discovery and advances in precision health. We congratulate the NYU Abu Dhabi research team on this important contribution to the UAE Healthy Future. Insights of this nature help deepen our understanding of the biological factors that shape long-term health and support our wider efforts to promote prevention, enhance population health and inform evidence-based interventions that can improve outcomes for our community."

With inputs from WAM