Daijiworld Media Network – New York
New York, Jun 15: In a breakthrough that underscores the deep connection between oral health and mental well-being, researchers have found a possible link between the diversity of bacteria in the mouth and depression. The study, conducted by the NYU Rory Meyers College of Nursing, suggests that individuals with lower diversity in their oral microbiome are more likely to exhibit symptoms of depression.
The research, published in the journal BMC Oral Health, analysed data from over 15,000 adults across the United States, using records from the National Health and Nutrition Examination Survey (NHANES), an extensive database maintained by the US Centers for Disease Control and Prevention.
According to the researchers, the mouth harbours a vibrant community of microbes — including bacteria, viruses, and fungi — which not only impact oral health but also play a crucial role in the body’s overall physiological balance. The study found that individuals with a less diverse bacterial population in their saliva samples were more prone to experiencing depressive symptoms.
Professor Bei Wu, the vice dean for research at NYU Rory Meyers and the study’s senior author, noted the significance of these findings. “Understanding the connection between the oral microbiome and depression could open new doors to identifying biomarkers and potential treatments for mood disorders,” she said in a statement.
The study further highlights that factors like smoking, alcohol consumption, medication use, and poor dental hygiene — often associated with depression — can alter the balance of bacteria in the mouth. Researchers believe that changes in the oral microbiome could affect mental health through inflammation or immune system responses.
Professor Wu emphasized the need for further research to explore the cause-effect dynamics of this link. “While our findings establish a correlation, we need to delve deeper into the mechanisms involved. This is part of a broader effort to explore how the oral microbiome may influence not just mental health, but also conditions like cognitive decline and dementia,” she added.
As science continues to unravel the complex relationship between physical and mental health, this study offers a compelling reminder of the far-reaching impact of oral hygiene — not just for a healthy smile, but potentially for a healthier mind.