Summary: In this episode, we explore the science of mucus — a powerful, intelligent defense system often misunderstood and overlooked. Learn why this sticky substance is essential for respiratory health, hydration, and immune defense. We’ll discuss what changes in mucus color really mean, how to support healthy mucus function naturally, and why your body’s production of mucus is a sign of resilience, not weakness. Disclaimer This article and podcast are for informational purposes only and do not constitute medical advice. Always consult with a qualified healthcare provider for personalized health guidance. Scientific References & Further Reading (in italics) Cone, R.A. (2009). Barrier properties of mucus. Advanced Drug Delivery Reviews, 61(2), 75-85. Thornton, D.J., Rousseau, K., & McGuckin, M.A. (2008). Structure and function of the polymeric mucins in airways mucus. Annual Review of Physiology, 70, 459-486. Button, B., Cai, L.H., Ehre, C., et al. (2012). A periciliary brush promotes the lung health by separating the mucus layer from airway epithelia. Science, 337(6097), 937-941. Lai, S.K., Wang, Y.Y., & Hanes, J. (2009). Mucus-penetrating nanoparticles for drug and gene delivery to mucosal tissues. Advanced Drug Delivery Reviews, 61(2), 158-171. Wolfe, R.M., & Patel, R.A. (2020). Upper respiratory tract infections. Primary Care: Clinics in Office Practice, 47(3), 457-470.