Immunity · 5 min
Mucous Membranes: Your First Line of Defense
Before your immune system springs into action, pathogens first have to get past a physical barrier: your mucous membranes. This often-overlooked layer in the nose, throat, lungs, and gut plays a major role in how often you catch colds or other infections.
In this article: What it is · How it works · Common myths · Practical tips · When to be careful
Key takeaways
- Mucous membranes are the first physical defense against pathogens.
- Adequate hydration and humidity keep them functional.
- A healthy gut microbiome supports the barrier function.
- Handwashing and saline rinses are simple, effective measures.
- Consult a doctor for chronic or recurring symptoms.
Written by Jochem Nohlmans, founder of Somora.