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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 low FODMAP, gluten-free, or low-carb, cycling through symptom management, and being told tests are normal, only to feel worse, confused, or convinced there’s no solution in sight.

Alyssa breaks down:

• What hydrogen sulfide SIBO is and isn’t
• Why it behaves differently than hydrogen or methane dominant SIBO
• Why symptoms can be unpredictable, systemic, and not limited to the gut
• How conventional testing and treatment often miss it
• How to think about diet, testing, and targeted functional approaches

If you’ve ever felt like your digestive symptoms just don’t make sense, fluctuating between diarrhea, constipation, bloating, brain fog, fatigue, or body pain, this episode will help you finally connect the dots.

Resources mentioned in this episode:

1. Download the free Hydrogen Sulfide SIBO Diet Guide + 7-Day Meal Plan 
2. Download the free Low Sulfur 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.

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