"It turns out that living beings are less like bags of sloshing water, as I imagined in grade school, and more like a stew. While water makes up most of it, water alone is thin and empty of the organic molecules from which organisms are built—the stew thickeners. Water alone is lifeless. Instead, it is the mucus in our bodies that—so long as it has the correct qualities and consistency—is the key to a healthy life. The 'fact' that our bodies are made mostly of water is misleading. What we are actually made of is mucus."

Jonathan Reisman is an internal medicine-pediatrics physician and author of The Unseen Body: A Doctor's Journey Through the Hidden Wonders of Human Anatomy.

He shares his story and discusses his KevinMD article, "We are actually made of mucus."

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Hidden wonders of human anatomy

The Podcast by KevinMD