EPISODE # 23

Could Your Histamine Intolerance Actually Be Sulfur Intolerance?

Sulfur, Histamine, and the Hidden Biochemical Blocks Keeping You Sick

We break down how disrupted sulfur metabolism can mimic histamine symptoms—severe bloating, crushing fatigue, joint pain, brain fog, skin flushing—and why reactions to garlic, onions, eggs, brassicas, NAC, and glutathione are key clues. You’ll learn the roles of sulfite/sulfide vs. sulfate, SUOX + molybdenum, B12, mitochondria, hydrogen sulfide overgrowth, and environmental drivers like mold and oxalates. We also cover testing pointers (homocysteine, stool, OAT), why low-sulfur diets are only a short-term tool, and practical next steps for practitioners and patients.

Who this episode is for

  • Practitioners & students looking to connect symptoms → biochemistry → drivers
  • Patients with “histamine” symptoms who react to high-sulfur foods/supplements

What you’ll learn

  • Symptom patterning: severe bloating, fatigue, joint aches, brain fog, hot/red flares, palpitations
  • Food & supplement clues: garlic, onions, eggs, brassicas, NAC, glutathione, MSM, ALA
  • Biochemistry: sulfite/sulfide → sulfate, SUOX (molybdenum-dependent), B12, mitochondrial links
  • Microbiome: hydrogen sulfide SIBO vs. large-bowel producers; why “just kill it” backfires
  • Environment: mold (gliotoxin), oxalates (transporter competition), heavy metals
  • Testing pointers: homocysteine (low can be a clue), stool patterns, OAT markers
  • Interventions: short-term low sulfur (only as a probe), support enzymes/cofactors, protect microbiome
  • Nervous system: limbic hypervigilance can amplify reactivity—why regulation work matters

Stay well,

Joanne Kennedy

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