The Gutsy Brain MD

Your poop may be telling you more about your health than you think.

In this episode, Dr. Rana Mafee takes a deep dive into stool testing—and why it can be an under-appreciated tool for understanding what’s happening inside the gut. Advanced stool tests can provide clues about hidden infections, parasites, yeast, microbiome imbalances, inflammation, digestive function, intestinal immune activity, and other factors that may be contributing to persistent symptoms.

Dr. Rana explains the difference between conventional stool testing, consumer microbiome tests, and comprehensive clinical tests such as the GI-MAP and GI Effects. She walks through what these tests actually measure, which findings may be meaningful, and—just as importantly—what stool testing cannot tell you.

You’ll also learn why seemingly “normal” routine testing doesn’t always mean everything is fine, how gut findings may connect to symptoms beyond the digestive tract, and why results should always be interpreted in the context of the whole patient.

If you’ve struggled with bloating, IBS, changes in bowel habits, unexplained digestive symptoms, or simply want to better understand your gut health, this episode will help you understand what your stool can—and can’t—reveal about your health.

You’ll learn:

• What your stool can reveal about your gut and overall health
• The difference between conventional stool tests, consumer microbiome tests, and advanced clinical testing
• What tests like the GI-MAP and GI Effects actually measure
• How stool testing can uncover parasites, yeast, bacterial imbalances, inflammation, and digestive dysfunction
• Why a “normal” conventional stool test may not tell the whole story
• How gut findings may be connected to symptoms outside the digestive tract
• The limitations of stool testing—and why results need to be interpreted in the context of your symptoms and health history
• When comprehensive stool testing may be worth considering

Comprehensive stool tests mentioned in this episode are tests you can ask you provider to order and include:

• GI Map (Diagnostic Solutions Lab) - https://www.diagnosticsolutionslab.com/
• GI Effects (Genova Lab) - https://www.gdx.net/

What if your body has been trying to tell you something for years...and you've been taught not to listen?

In this deeply personal episode, I share the story I've never told publicly—the journey that transformed not only my own health, but the way I practice medicine.

As a neurologist with training in functional medicine, I spent years helping patients search for the root causes of chronic illness. Then I became the patient.

Over the course of several years, I developed five autoimmune diseases, battled chronic gastrointestinal infections, experienced debilitating anxiety, brain fog, worsening psoriasis, and severe joint pain. Just as I thought I was finally finding answers, I was diagnosed with a rare soft tissue sarcoma that required radical surgery and six months of chemotherapy.

But my story didn't end with cancer.

In this episode, I explore how persistent gut dysfunction, chronic inflammation, and immune dysregulation changed the way I think about health and healing. I share what happened when I began looking beyond diagnoses to ask a different question:

Why?

This isn't a story about miracle cures or one-size-fits-all protocols. It's a story about curiosity, resilience, and the importance of looking deeper. While my experience is unique, it reinforced a lesson I now carry into every patient encounter: symptoms are often messages, and our diagnoses are only part of the story.

In this episode, you'll learn:

• Why chronic disease often begins years before a diagnosis
• How becoming a patient changed the way I practice medicine
• The connection between gut health, the immune system, and chronic inflammation
• Why healing is rarely linear—and why that matters
• How asking "Why?" can change the trajectory of your health

If you've ever been told your tests are "normal" while knowing something still isn't right, I hope this conversation gives you hope—and inspires you to keep asking questions.

Because your diagnosis is not your destiny.

IBS Is Not Benign: What Your Gut May Be Trying to Tell You

Have you ever been told, "It's just IBS"?

For millions of people living with irritable bowel syndrome, there's nothing "just" about daily bloating, abdominal pain, constipation, diarrhea, or planning life around the nearest bathroom.

In this episode of The Gutsy Brain MD, Dr. Rana Mafee explores why IBS may be less of a diagnosis and more of a signal that something deeper is happening beneath the surface. Rather than asking, "How do we treat IBS?" she asks a more important question:

What is your gut trying to tell you?

You'll learn:

• Why IBS describes symptoms—but often doesn't explain their cause
• The many root causes that can produce IBS symptoms, including dysbiosis, SIBO, SIFO, food intolerances, digestive enzyme deficiencies, infections, medications, stress, and low fiber intake
• What healthy digestion should actually look like
• Why IBS is linked with anxiety, depression, migraines, chronic pain, and fatigue through the gut-brain axis
• How a root-cause approach can complement conventional medicine to uncover what's driving symptoms

Whether you've struggled with IBS for years or simply want to better understand the connection between your gut and your brain, this episode will challenge the idea that chronic digestive symptoms are something you simply have to live with.

Your symptoms may not be the problem—they may be the clue.

Episode 3: Leaky Gut. Leaky Brain. The Hidden Link to Chronic Disease

What if some of the most common chronic diseases don't begin where the symptoms appear?

In this episode of The Gutsy Brain MD, neurologist and functional medicine physician Dr. Rana Mafee explores the fascinating science behind intestinal permeability ("leaky gut") and blood-brain barrier dysfunction ("leaky brain")—two protective barriers that play a critical role in inflammation, immunity, and brain health.

You'll learn:

• Why the gut lining is one of the body's most important defense systems
• What scientists mean by "leaky gut" and why it's far more than a wellness buzzword
• How inflammation that begins in the gut may influence the brain
• The connection between the microbiome, immune system, and neurological health
• What current research says about intestinal permeability in autoimmune disease, migraine, depression, Alzheimer's disease, Parkinson's disease, and other chronic conditions
• Practical, evidence-based strategies to support a healthy gut barrier through nutrition, lifestyle, and functional medicine principles

This episode separates scientific evidence from hype, explains complex concepts in an easy-to-understand way, and explores why protecting your gut may be one of the most important investments you can make in your long-term brain health.

Whether you're a patient, healthcare professional, or simply curious about the gut-brain connection, this episode will change the way you think about chronic disease.

Next episode: We'll uncover the hidden world of SIBO (Small Intestinal Bacterial Overgrowth) and SIFO (Small Intestinal Fungal Overgrowth)—why they're commonly missed, how they're diagnosed, and why identifying them can completely change someone's treatment plan.

Episode 2: What Western Medicine Is Missing: Why Chronic Disease Demands a New Approach

What if we've been asking the wrong question about chronic disease?

Modern medicine has transformed the treatment of infections, strokes, trauma, and countless life-threatening conditions. But when it comes to chronic illnesses like Alzheimer's disease, Parkinson's disease, autoimmune disease, IBS, migraines, depression, diabetes, and chronic fatigue, treating symptoms alone may not be enough.

In this episode, neurologist and integrative medicine physician Dr. Rana Mafee explores why chronic disease often begins years—even decades—before a diagnosis is made, and why understanding why someone became ill may be just as important as identifying what disease they have.

You'll learn:

• Why today's healthcare system excels at treating acute illness but often struggles to prevent chronic disease.

• How functional medicine complements—not replaces—conventional medicine by searching for the root causes of illness.

• Why nutrition, sleep, exercise, stress, the gut microbiome, and mitochondrial health play critical roles in long-term health.

• The inspiring story of Dr. Terry Wahls and how her experience with multiple sclerosis reshaped the way many clinicians think about chronic disease.

• Why your body functions as an interconnected network—not a collection of isolated organs.

• How small daily choices create powerful biological signals that shape your future health.

This episode is an invitation to think differently about medicine—not as a choice between conventional and functional approaches, but as an opportunity to combine the best of both in the pursuit of lasting health.

If you've ever wondered why so many people continue to struggle despite taking medications, or you're curious about the science of creating health instead of simply treating disease, this episode is for you.

Protect your gut. Protect your brain.

Episode 1: Is Your Gut Running Your Brain? The Science Behind the Gut-Brain Axis

Can your gut microbiome influence your brain?

Modern neuroscience says yes.

In this first episode of The Gutsy Brain MD, neurologist and integrative medicine physician Dr. Rana Mafee explores the rapidly growing science behind the gut-brain axis and explains how the gut microbiome, vagus nerve, inflammation, and nutrition may influence everything from mood and anxiety to cognitive function and the risk of neurological disease.

For decades, we've been taught that the brain controls the body. But emerging research suggests the conversation is far more complex. In fact, most of the communication along the vagus nerve travels from the gut to the brain, fundamentally changing how scientists think about brain health.

In this episode you'll discover:

🧠 What the gut-brain connection really is—and why it matters

🦠 How the gut microbiome communicates with your brain

🌿 Why fiber, short-chain fatty acids, and microbial diversity are essential for a healthy brain

⚡ The role of the vagus nerve in gut-brain communication

🔥 How chronic inflammation may connect gut health to neurological disease

🧩 What current research suggests about the gut's role in Parkinson's disease, Alzheimer's disease, depression, anxiety, migraine, multiple sclerosis, and other neurological disorders

🥗 Five practical, evidence-based strategies you can start today to improve your gut health and support your brain health

Dr. Mafee also shares the patient story that transformed the way she practices neurology, as well as her own personal health journey that deepened her passion for understanding the powerful connection between the gut and the brain.

Whether you're interested in healthy aging, nutrition, functional medicine, integrative medicine, preventive neurology, or simply want to optimize your brain, this episode will change the way you think about your health.

If you enjoy the show, be sure to follow The Gutsy Brain MD and share this episode with someone who's ready to discover why protecting your gut may be one of the most powerful things you can do for your brain.

Protect your gut. Protect your brain.

The Gutsy Brain MD Podcast

Welcome to The Gutsy Brain MD Podcast, where cutting-edge neuroscience meets the power of the gut microbiome, nutrition, and lifestyle medicine.

I'm Dr. Rana Mafee, a double board-certified neurologist and integrative medicine physician. Each week, we'll explore the fascinating connection between the gut and the brain and uncover how the health of your microbiome influences memory, mood, anxiety, cognitive function, inflammation, and long-term brain health.

Whether you're navigating brain fog, IBS, constipation, autoimmune disease, chronic fatigue, anxiety, Parkinson's disease, Alzheimer's disease, or simply looking to optimize your health, this podcast will help you separate medical myths from scientific evidence.

You'll hear:

• 🧠 The latest research in neurology, nutrition, and the microbiome

• 🌿 Practical strategies to improve gut and brain health

• 🎙️ Conversations with leading physicians, scientists, and health experts

• 💡 A fresh perspective that challenges outdated medical dogma while remaining grounded in evidence

If you're curious, love learning, and want to take control of your health through science and lifestyle, you're in the right place.

Because when you heal your gut, you change your brain. And when you change your brain, you change your life.

Protect your gut. Protect your brain.