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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 confidence, and his life.

What started as a frustrating case of “IBS with no answers” turned out to be Hydrogen Sulfide SIBO, a form of small intestinal bacterial overgrowth that’s often missed on standard breath tests and misdiagnosed as IBS, anxiety, or stress.

Alyssa and Doug unpack what it really takes to identify and treat this overlooked condition, from testing and dietary strategy to motility support and rebuilding tolerance, showing that recovery is not only possible, it’s life-changing.

What You’ll Learn

• How Hydrogen Sulfide SIBO differs from other types of SIBO.
• Common but often missed symptoms include bloating and diarrhea, fatigue, brain fog, and joint pain.
• The real reason restrictive diets often make things worse.
• Steps to test, identify, and treat Hydrogen Sulfide SIBO effectively.
• A firsthand look at what long-term gut healing and food reintroduction actually look like.

Resources mentioned:

1. Download Alyssa’s Low Sulfur Diet guide - a short-term trial to reduce meal-time overwhelm, observe meaningful patterns, and understand whether sulfur is contributing to how you feel.
2. If meals that should feel healthy instead trigger gas, urgency, nausea, brain fog, or a heavy, toxic feeling, hydrogen sulfide SIBO may be part of the picture. Download Hydrogen Sulfide SIBO diet guide + 7-day meal plan. 
3. DM “GUT CHECK” on Alyssa’s Instagram for a personalized quiz and free meal plans & resources to kickstart your gut healing journey.
4. Check out Alyssa’s FREE Masterclass “Why your gut still isn’t better - the real reason you feel stuck here. 
5. Learn more about personalized gut healing plans at Nutrition Resolution
6. Find Alyssa on: Instagram, LinkedIn, Facebook, Pinterest  

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If you’re enduring uncomfortable, painful, and embarrassing GI symptoms and feel like you’ve tried everything, Alyssa uses a specialized approach to help people who’ve gone from doctor to doctor finally find relief. Book your 15-minute strategy call for FREE here.

Looking for a supportive Gut Health community? Alyssa is building a community committed to helping people overcome their digestive symptoms by addressing the root cause using food and nutrition. Join Alyssa’s FREE Facebook Community here.

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