Latest Episodes

Why Methane SIBO Causes Weight Gain (Even When Eating Less)

Have you ever looked at your plate and thought, “I’m eating less than ever… so why is my weight going up?” If you’ve tried low-FODMAP, cut sugar and carbs, cleaned up your diet, and somehow feel heavier, slower, and more inflamed, this episode ...

February 04, 2026 • 24:27

Hydrogen Sulfide SIBO Diet & Recovery: What Finally Worked for Doug

In this episode of The Gut Health Dialogues Podcast, Alyssa Simpson sits down with her client Doug, who shares his powerful journey from being house-bound and limited to a “safe” diet of chicken and rice, to reclaiming his gut health, his confi...

January 28, 2026 • 45:19

Hydrogen Sulfide SIBO: Why Most Approaches Fall Short and How to Fully Address It Naturally

In this episode, Alyssa Simpson unpacks a common yet widely misunderstood subtype of small intestinal bacterial overgrowth (SIBO): hydrogen sulfide SIBO. Many people with this pattern have spent years chasing answers, trying diets like l...

January 15, 2026 • 53:29

When Your Body Feels Toxic After Eating: The Sulfur Clue Everyone Misses

Have you tried low FODMAP, gluten-free, dairy-free, or elimination diets and still feel sick after eating? In this episode, Alyssa Simpson breaks down one of the most confusing and misunderstood nutrition strategies in gut health: the low sulfu...

January 08, 2026 • 41:18

How Foodini Is Making Eating Out Safer for People With Celiac, Food Allergies & Sensitivities ft. Dylan McDonnell

Eating out with food allergies, celiac disease, IBS, or food sensitivities can feel overwhelming — and sometimes unsafe. In this episode, Alyssa Simpson chats with Dylan McDonnell, founder of Foodini, about how technology and regulation ...

December 31, 2025 • 37:32

Fan Mail

I just watch your travel presentation which was very good. You mentioned digestive enzymes and gave the names of about four. Can you send me those names? I wanted to write them down but had no pencil handy. Thank you

Portland, Oregon