Histamine Health Coach

Episode 10 - When It’s Not the Food: Understanding HNMT & Internal Histamine


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HNMT is the overlooked enzyme that handles internally-produced histamine in your brain, liver, and nervous system while DAO manages dietary histamine. Many histamine intolerance sufferers experience symptoms despite following a low-histamine diet because their HNMT enzyme is overwhelmed by stress, hormones, or environmental triggers.

• HNMT and DAO work differently – DAO breaks down external histamine from foods while HNMT processes internal histamine
• Internal histamine comes from stress, hormones, immune responses, and environmental triggers
• HNMT symptoms include extreme fatigue, sensitivity to fragrances, paradoxical reactions to relaxing activities, hormonal migraines, and anxiety
• Supporting HNMT requires healing your gut, eating methylation-supporting foods (B12, folate, magnesium, choline)
• Lowering chronic stress load through breath work, therapy, and nervous system regulation is crucial
• Avoiding fragrances and toxins reduces the burden on your HNMT enzyme
• Histamine metabolism improves when addressing the whole picture: gut health, inflammation, stress, nourishment and rest

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I’m currently looking for five women who are ready to stop just managing histamine intolerance and start living well with it over the next 12 weeks. This is for women who feel like their bodies dictate their lives — women who are tired of reacting, restricting, and second-guessing. Women looking for relief, steadier routines, and the kind of confidence that leads to actually living well with histamine intolerance. If that’s you, email me at [email protected] with the word READY, and I’ll personally follow up so we can talk about what support might look like for you.

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Histamine Health CoachBy Teresa Christensen