NEW YORK, US: Oral diseases and depression are both projected to rise in prevalence over the coming decades, and recent findings suggest the two may be interlinked. A new study conducted by researchers from institutions in the US and China has investigated the association between depressive symptoms and oral dysbiosis, revealing that depression is significantly associated with reduced oral microbiome diversity. While the connection between gut microbiota and mental health has been widely explored, this study underscores the need for further investigation into the role of the oral microbiome in psychiatric conditions.