08/11/2025
For decades, the appendix was dismissed as a useless organ. Doctors removed it without hesitation, believing it served no real purpose in the human body. But groundbreaking research out of Duke University is now revealing a very different truth. The appendix is far from expendable. It might actually be one of your gut’s most important allies, packed with neural power and immune function that supports both digestion and brain health.
Scientists have found that the appendix contains over 200 million neurons, more than your spinal cord. These neurons are not just sitting idle. They are connected to complex networks that allow the appendix to operate semi-independently and communicate directly with the brain. That’s right: the appendix could function like a second brain in your gut, playing a crucial role in the gut-brain axis.
One of its most vital functions is serving as a safe house for beneficial bacteria. When your body experiences illness, especially something that wipes out your gut flora, the appendix acts as a reservoir to restore microbial balance; housing roughly 70% of your immune system. It also helps regulate immune responses and supports immune memory. In short, it is an unsung hero in maintaining your internal health ecosystem.
People who’ve had their appendix removed may notice long-term changes in digestion, increased vulnerability to intestinal infections, and even altered stress responses in the gut. This is pushing parts of the medical community to rethink the routine practice of removing the appendix during mild inflammation. Some hospitals now opt for antibiotic treatment when possible, choosing to preserve the organ’s function for long-term wellness.
If you no longer have your appendix, there’s still hope... In fact, I'd consider it mandatory that You routinely support your gut-brain communication system by improving your microbiome through fermented foods like kimchi and kefir, taking high-quality probiotics, and incorporating nutrients like collagen, zinc, and bone broth to repair and protect your gut lining; after all, you no longer have your appendix backup system.
When it comes to probiotics (supplemental), they should be enteric coated to ensure survival through stomach acid and the digestive process. Dr. Marco's Company, is the only pan-biotic or tri-biotic (pre, pro and post biotic), and arguably the best probiotic supplement on the planet; designed to reset the microbiome (where 70% of your immune system is), by flooding it with a broad spectrum of enteric coated healthy gut bacteria 🦠 🧫.
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The appendix is not a leftover piece of biology. It’s a guardian of your gut and an essential part of your body’s internal communication network. Science is finally catching up with what the body has known all along.
