Headaches, food sensitivities, fatigue—but “normal” test results? You may be dealing with Mast Cell Activation Syndrome (MCAS). In this episode of The Natalie Tysdal Podcast, Natalie sits down with Dr. Kelly McCann, a leading expert in functional, integrative, and environmental medicine, to break down what MCAS really is, why it’s on the rise, and how you can find answers and healing.

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• What mast cells are and how they impact your immune system
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• The most common MCAS symptoms (migraines, gut issues, allergies, fatigue)
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• Why MCAS is becoming more prevalent in today’s toxin-filled environment
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• The connection between MCAS, mold exposure, Lyme disease, toxins, and stress
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• How conventional vs. functional medicine approaches MCAS diagnosis
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• Steps to take if you suspect MCAS: finding the right specialist and advocating for yourself
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• Practical lifestyle changes to calm symptoms and support nervous system health
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• Hopeful recovery stories showing that healing is possible
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Millions live with undiagnosed MCAS, struggling with unexplained reactions and chronic symptoms. This conversation brings clarity, validation, and actionable steps for anyone navigating complex health issues.

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• Guest Website: Dr. Kelly McCann – The Spring Center
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• Institute for Functional Medicine
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• American Academy of Environmental Medicine
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• ISEAI: International Society for Environmentally Acquired Illness
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• Natalie’s website
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• @ntysdal on Instagram
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• @ntysdal on TikTok
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• Natalie Tysdal on Facebook
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New episodes drop every Monday. Subscribe for weekly wellness insights.

Natalie Tysdal is a health journalist, not a licensed medical professional. This podcast is for educational purposes only and should not be taken as medical advice, diagnosis, or treatment. Always consult your physician before making health decisions.