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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

  • anemia

  • insulin resistance

  • menopausal changes

  • poor sleep

  • frozen shoulders

  • brain fog

  • 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:

 

  • look deeper

  • ask better questions

  • identify patterns

  • understand root causes

  • create staged, realistic plans

  • support complex health with clarity

My work blends evidence-based dietetics, functional nutrition, and lived experience.
 

My Credentials

MSc

  • Registered Dietitian (RD)

  • Certified Diabetes Educator (CDE)

  • Integrative & Functional Nutrition Certified Practitioner (IFNCP)

       which included training into Systems biology + 

       root cause assessment to Nutrition Focused physical assessment (NFPA) 

  • Functional lab interpretation (nutrigenomics, organic acids, microbiome testing (GIMAP)

  • Therapeutic elimination diets

  • 20+ years clinical experience 

  • Specialized training in diabetes, bariatric surgery, pregnancy/postpartum, hormones, digestion, and neurodivergent-informed care

 

 

View full professional background on LinkedIn

~ Yvonne

Fresh Purple Artichokes

We acknowledge that Spicy Brains Nutrition is located on the traditional territory of the Anishinaabeg, Haudenosaunee, Attiwonderonk, and the Mississaugas of the Credit First Nation. This land is covered by Treaty 3. Today, this meeting place is still home to many Indigenous peoples from across Turtle Island. We are grateful for the opportunity to live, work, and support our community on this land. We recognize the enduring presence and deep traditional knowledge of Indigenous peoples and are committed to fostering respectful relationships and reconciliation.

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