The Gut Show

Is your stomach eating itself? Autoimmune Gastritis, Pernicious Anemia, and What Bryan Johnson's Diagnosis Actually Tells Us

The Gut Show

Show Notes

You may have seen Bryan Johnson talking about autoimmune gastritis (AIG), but what is it actually, and what does the research say? In this episode of The Gut Show, we're digging into autoimmune gastritis, including what happens in the stomach, symptoms, pernicious anemia, and what treatment actually looks like. We'll also take a closer look at some of the claims being shared online and separate what's backed by research from what might be getting a little ahead of the science. If Bryan Johnson's story has you wondering about AIG or questioning whether you should be worried about it, this episode will help you understand what we actually know.

Mentioned in this episode: MASTER Method Membership What's your poop personality?

Thank you to our partner: If you're dealing with GI issues like IBS, SIBO, EoE, IBD, or IMO, you may have heard of the elemental diet. mBIOTA Elemental is a clinically proven, short-term liquid nutrition protocol that provides essential nutrients in their simplest forms, allowing much of the GI tract to rest and reset. It's a nutrition-based alternative to antibiotics for managing GI conditions. Developed by a patient and her doctors to improve the patient experience — without sacrificing effectiveness. Learn more at mBIOTA.com and save 15% on the two-week protocol with code GUTSHOW15.

Connect with Erin Judge, RD: Instagram TikTok Work with Erin FREE symptom tracker

More from The Gut Show

Oct 16, 2026

What happens when you're constipated and feel like you've tried EVERYTHING? And at what point does surgery become an option? In this episode of The Gut Show, I'm joined by colorectal surgeon Dr. Carmen Fong to talk about chronic constipation from a surgeon's perspective. We're getting into the different types of constipation, how she decides which tests and treatments actually make sense, and what she considers when someone comes to her after medications, laxatives, and other treatments haven't worked. We also talk about colonics, defecography, and whether removing part or all of the colon can actually treat constipation.

Oct 9, 2026

Have you ever seen "redundant colon" on your colonoscopy report and wondered what it actually means, or whether it could explain your chronic constipation? In this episode of The Gut Show, I'm joined by Dr. Kyle Staller to unpack what a redundant colon actually is and, more importantly, whether it matters for your symptoms. We talk about what's considered a "normal" colon length, differences between men and women, and whether the extra twists and loops associated with a redundant colon are something to worry about. We also get into some of the biggest questions for people struggling with chronic constipation: Could a redundant colon be part of the reason stool just doesn't seem to move?

Sep 25, 2026

Colon cancer rates are rising, especially among younger adults….but before you let that statistic stress you out, listen to this episode to learn what you actually need to know! In this episode of The Gut Show, I'm joined by Dr. Leybelis Padilla to talk about what we know about colon cancer, what may increase your risk, symptoms to pay attention to, and the different screening options available, including the misinformation surrounding them. In this episode, we cover: Introducing Dr. Leybelis Padilla [2:44] What is colon cancer? [4:00] What causes polyps? [6:19] Family history [8:13] Why are the numbers rising? [11:13] Can fiber be protective? [15:33] Signs of colon cancer [18:28] Colonoscopies and other options [26:23] Misinformation [29:17] Is colonoscopy prep harmful? [36:36] How to work with Dr. Leybelis Padilla [47:28]

Sep 18, 2026

Can digestive enzymes help with IBS symptoms? What about enzymes that target specific FODMAPs? In this episode of The Gut Show, we're talking with Jocelyn Wells from FODZYME about digestive enzymes and their role in breaking down FODMAPs. We'll explore what digestive enzymes are, how they work, and how targeted enzyme therapy may help with digestion and IBS symptoms. We'll take a closer look at enzymes designed to target specific FODMAPs, discuss whether using an enzyme supplement means you're actually deficient in that enzyme, and whether enzyme therapy can be effective when it doesn't target every FODMAP group. If you're a clinician wanting FODZYME samples and resources for your practice, you can request them here.

Mar 27, 2026

What do Ehlers-Danlos syndrome and hypermobility have to do with IBS? A lot more than you might think.

See all episodes →