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Microbes in the nasal cavity, especially in the olfactory epithelium, are closer to the brain than the gut microbiota. They potentially exchange metabolites directly with the CNS.
There is strong evidence linking early-life gut and Lung microbiota / Respiratory microbiota with respiratory illness
The upper respiratory microbiome acts as a gatekeeper, protecting against respiratory pathogens by competing directly and interacting with the host's immune system
The airway mucosa hosts a variety of bacteria, fungi, viruses, and archaea, forming the respiratory microbiome. This microbiome's composition and role in respiratory health are starting to be understood
The nasal cavity hosts many microorganisms and has the densest microbiome in the respiratory system.
Opportunistic pathogens like Streptococcus pneumoniae and Haemophilus influenzae can colonize the upper respiratory tract without symptoms, potentially leading to infections
see also:
Asthma & Childhood / Child
Asthma & Dysbiosis
Asthma & Gut microbiota
Childbirth / Perinatal & Development of Gut Microbiota
Childhood / Child & Development of Gut Microbiota
Chronic obstructive pulmonary disease (COPD) / Emphysema
Development of Gut Microbiota & Neonates / Early Childhood
Development of Gut Microbiota & Prenatal development / Prenatal Life
Dysbiosis & Pulmonary disorders
Gut microbiota & Inflammation / Inflammatory Diseases
Gut Microbiota-Lung Axis