Root Cause Mastery · Fall 2026

Build a clearer clinical plan for your most complex patients.

The Functional Medicine Mentorship

A live, 10-session functional medicine mentorship with Tom Malterre, MS, CN, IFMCP. Connect patient history, functional labs, and clinical findings into practical next steps—with guided case reviews and a private strategy call.

Join the Fall 2026 Cohort

$997 paid in full or 3 monthly payments of $370 ($1,110 total)

October 6–December 15, 2026 Tuesdays · 5–7 p.m. Pacific No session November 24

A personal invitation from Tom

Take 70 seconds to get to know the mentorship and the teacher behind it.

A PARTICIPANT'S PERSPECTIVE

Meet Renay Fredette, MD

What is it like to learn with Tom? Hear Renay describe her experience with Root Cause Mastery, in her own words.

Watch Renay's story · 2 min

Your Fall 2026 mentorship, at a glance

10 live sessions + recordings + practical resources + a private strategy call

October 6–December 15, 2026
Tuesdays, 5–7 p.m. Pacific
No session November 24

Everything included

Live teaching and guided case reviews
Work through the framework with Tom and connect it to clinical scenarios.

Session recordings and downloadable resources
Revisit the teaching and bring the material back to your practice.

A 30-minute private strategy call with Tom
Discuss a challenging case, your practice goals, or applying the training.

Choose your payment option

$997
One payment · Save $113

Or 3 monthly payments of $370
$1,110 total · USD

Select your preferred option at checkout.

Join the Fall 2026 Cohort

Root Cause Mastery | 10-Session Functional Medicine Practitioner Training

From information to clinical application

You know there is more to the case. Learn how to connect the pieces.

When symptoms persist and lab results raise more questions than answers, another lecture is not enough. You need a practical way to organize the evidence, identify priorities, and decide what to explore next.

Root Cause Mastery pairs live teaching with protocols and case discussions, so you can practice applying the framework—not just collecting more information.

Learn the framework. Then work through the cases.

Explore digestion, the microbiome, nutrient status, environmental exposures, and mitochondrial function with Tom Malterre, drawing on 21 years of clinical practice.

Bring the concepts together in guided case reviews, and use your 30-minute private strategy call to discuss a challenging case, your practice goals, or applying what you have learned.

Fall 2026 · October 6–December 15 · Tuesdays, 5–7 p.m. Pacific

Reserve Your Seat

What you walk away with

Build skills you can bring back to your practice.

Identify root cause drivers behind your most complex cases instead of cycling through medications that mask the signal.

Interpret advanced functional labs with confidence. Know exactly what you're looking at and what to do about it.

Use AI tools to accelerate clinical reasoning and surface patterns you'd otherwise miss in complex cases.

Build personalized protocols that address the why behind your patient's suffering, not the label on their chart.

Communicate with patients in a way that builds trust and follow-through. When patients understand why, they do the work.

Your 10-session curriculum

Ten sessions. A connected clinical framework.

These are the frameworks I use in my own practice, with patients, every week. Each session includes protocols you can apply immediately. Not theory you'll need to figure out later.

The Roots of Disease

Learn a framework for organizing the contributors to chronic illness and identifying priorities in complex cases.
Master Digestion Protocols

Trace the steps of digestion, recognize common patterns of imbalance, and explore practical approaches to supporting digestive function.
Microbiome Balancing

Build your approach to interpreting microbiome findings and connecting them with the clinical picture.
Rethink Your Approach to SIBO

Explore SIBO assessment and treatment considerations, including nutrition and approaches beyond antibiotics.
Elimination Diet Breakthroughs

Learn how to guide an elimination diet, recognize common barriers, and support follow-through, drawing on Tom’s work in The Elimination Diet.
Simplify Detoxification

Include environmental exposure history in your assessment and explore practical strategies for supporting detoxification.
Mood and Neurotransmitters

Map neurotransmitter pathways and examine how they inform your approach to mood and cognitive concerns.
Mitochondrial Health and Energy

Explore mitochondrial function, nutrient support, and their relevance to patients presenting with low energy.
Integrate Your Skills

Apply the frameworks from the first eight sessions to cases from Tom’s practice through guided group discussion.
Case Study Mastery

Bring a case for group discussion and practice organizing findings, weighing priorities, and developing a clinical plan with Tom’s guidance.

10 live sessions. Practical frameworks. Guided case review.

Enroll in the Fall 2026 Cohort

Your mentor

Tom Malterre, MS, CN, IFMCP

TEDx Speaker663K+ views

I discovered nutritional biochemistry at age 10 and never looked back. Two degrees in nutritional sciences, 21 years seeing patients, and thousands of cases later, I've figured out how to make extraordinarily complex science usable in a clinical setting.

I've served as an educator for the Institute for Functional Medicine, Thorne Research, and the Autism Research Institute. I was Director of Education at both Seeking Health and Viome. I've been teaching practitioners online for over 15 years.

What that means for you: no bloated lectures. No academic rabbit holes. Story-driven teaching that makes the complex feel intuitive and immediately applicable when your next patient walks in.

MS and BS in Nutrition
Former IFM Faculty Member and Educator
Author, The Elimination Diet
Former Educator, Thorne Research
Former Dir. of Education, Seeking Health
Former Dir. of Education, Viome
Autism Research Institute Faculty
21+ years clinical practice

Is this training right for you?

This is for you if:

You're a licensed practitioner ready to move beyond symptom management
You're frustrated that conventional tools aren't resolving your patients' conditions
You want a repeatable, evidence-based system for identifying root causes
You want protocols you can apply this week, not theory to file away
You want to become the practitioner your most complex patients have been searching for

This is not for you if:

You want a lecture series without case discussion or application
You want a passive course you can watch on 2x speed
You're not willing to change how you approach patient cases
You want a single protocol to apply to every patient

From practitioners who've trained with Tom

What they're saying

"Tom takes the most complex research and makes it feel like common sense. My practice changed within weeks of completing this training."

Mary

Practitioner

"His practical, evidence-based protocols resolved my patient's chronic condition in months. Completely changed how I practice."

Emily, ND

Naturopathic Doctor

More voices from the mentorship

Hear Amit and Allie share their experiences learning with Tom.

Amit Batra, MD

Root Cause Mastery participant

Watch his story · 1½ min

Allie Macomber, FNLP