
My Story
Yvonne Mullan
MSc, RD, CDE, IFNCP Registered Dietitian
& Integrative and Functional Nutrition Certified Practitioner
I didn’t come to Integrative and Functional Nutrition because everything in my own health journey was smooth.
I came to it because it wasn’t.
I’m a late-diagnosed ADHDer and a mom to an AuDHD teen. For years, I moved through life feeling like I was “almost keeping up” — until I wasn’t. My brain was fast and creative, but also overwhelmed, foggy, and exhausted. My body felt unpredictable. My energy and mood shifted in ways I couldn’t explain. And no matter how many professionals I saw, no one seemed to be looking at the whole picture.
Understanding My Neurodivergence
As I learned more about neurodivergence — the sensory needs, the interoception challenges, the
executive function realities — I finally understood why traditional healthcare felt so rigid, judgmental, and not built for spicy brains.
I began to recognize the hyperfocus, time blindness, sensory sensitivities, and overwhelm that
had shaped my life. Everything suddenly made sense.
My Own Health Journey
Over the past decade, I’ve navigated
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anemia
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insulin resistance
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menopausal changes
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poor sleep
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frozen shoulders
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brain fog
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chronic overwhelm
I saw multiple practitioners who weren’t communicating with each other. I was handed prescriptions or long supplement lists without a clear plan. I left appointments overwhelmed and confused, no closer to answers.
That experience changed everything for me.
How I Found Integrative Functional Nutrition
My frustration — and my curiosity — led me to study Integrative and Functional Nutrition: a whole person, root-cause approach that looks at how hormones, digestion, inflammation, stress, physiology, metabolism, the nervous system, and the brain all connect.
I wanted to understand why symptoms happen, not just how to manage them. And I wanted to
translate complex science into simple, meaningful steps that real people with real lives could
actually use.
My Professional Background
Today, I’m a Registered Dietitian with over 20 years of clinical experience — and part of a small group of Canadian dietitians with the advanced Integrative and Functional Nutrition Certified Practitioner (IFNCP) credential.
This training allows me to:
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look deeper
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ask better questions
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identify patterns
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understand root causes
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create staged, realistic plans
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support complex health with clarity
My work blends evidence-based dietetics, functional nutrition, and lived experience.
My Credentials
MSc
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Registered Dietitian (RD)
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Certified Diabetes Educator (CDE)
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Integrative & Functional Nutrition Certified Practitioner (IFNCP)
which included training into Systems biology +
root cause assessment to Nutrition Focused physical assessment (NFPA)
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Functional lab interpretation (nutrigenomics, organic acids, microbiome testing (GIMAP)
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Therapeutic elimination diets
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20+ years clinical experience
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Specialized training in diabetes, bariatric surgery, pregnancy/postpartum, hormones, digestion, and neurodivergent-informed care
View full professional background on LinkedIn
~ Yvonne



