Nasal Bacteria Linked to Depression-Like Behavior in Mice
Source: Nasal Staphylococcus aureus carriage promotes depressive behaviour in mice via sex hormone degradation (2025-09-23)
Nasal carriage of Staphylococcus aureus has been found to promote depressive behaviors in mice by degrading sex hormones. This discovery highlights a potential microbial influence on mental health, suggesting that bacteria in the nasal cavity can impact mood and behavior. The study underscores the importance of understanding how microbiota interactions affect brain function and mental health. Further research could lead to new approaches for treating depression by targeting nasal bacteria or hormone regulation.