Practitioner Education Center
Advanced Clinical Education in Mold, Mast Cell & Biotoxin Illness
With Dr. Margaret Christensen, MD and Dr. Gail Clayton, DCN
Clinical education for physicians, nutritionists, and functional medicine practitioners who care for mold-exposed and biotoxin-affected patients. Explore practitioner-focused articles, professional courses in mold illness, mast cell disorders, autoimmunity, and functional biochemistry, and continuing education built from years of clinical teaching.
From the Learning Center
Practitioner Articles
Clinical perspectives on evaluating the mold-exposed patient, interpreting immune markers, sequencing treatment, and caring for highly reactive patients.
Patient Assessment
How to Evaluate the Mold-Exposed Patient
Build the exposure timeline, complete a sound standard workup, and understand what urine mycotoxins, CIRS biomarkers, and other specialized tools can and canβt establish.
Interpreting Labs
Interpreting TGF-Beta and Immune Patterns in Mold Illness
How to read TGF-beta 1, MMP-9, C4a, and related marker clusters as context markers, track trends rather than single values, and avoid overinterpretation.
Treatment Sequencing
The Order of Operations in Complex Mold and Biotoxin Illness
A flexible sequencing framework, from exposure and elimination to stabilization, binders, colonization, and repair, plus why adding one change at a time matters.
Sensitive Patients
Managing the Highly Sensitive Mold Patient: MCAS and Reactivity
Differentiating MCAS from other causes of reactivity, stabilizing before escalating, low-and-slow dosing, and designing a plan the patient can actually tolerate.
Featured Resource Β· Kindle E-Book
Understanding TGF-Beta in Mold Illness
What This Immune Marker Reveals About Inflammation, Glutathione, and Immune Balance
A concise guide by Dr. Gail Clayton on what TGF-beta 1 is, how it connects to glutathione and oxidative stress, why it appears so often in mold-related illness, and why a single result should never be interpreted in isolation.
Professional Training
Courses & Educational Guides
Self-paced courses and in-depth guides that go deeper than the articles.
Mold Detox Diet
Foundational education in nutrition, lifestyle strategies, and supporting patients navigating mold-related illness.
Mold, Mast Cells, & Autoimmunity
Advanced education exploring mold-related immune dysfunction, mast cell activation, histamine intolerance, and autoimmunity.
Hormonal Havoc: The COVID Fallout
Complete 150-Page E-Guide β $17
Explore Dr. Margaret Christensen's educational guide on hormonal changes, immune dysfunction, and other health concerns following COVID.
Practitioner Course with Dr. Gail Clayton
Advanced Training in Organic Acids Interpretation
Move beyond flagging high and low markers. This course teaches healthcare practitioners to read organic acid patterns through nutritional biochemistry and metabolic pathways, recognize mitochondrial dysfunction and nutrient cofactor needs, connect results to metabolic dysfunction, and apply clinical interpretation to complex cases.
Continuing education: approved by BCNS and ANA for up to 5.5 CE credits for Certified Nutrition Specialists. Check with your licensing board.
New Educational Library
COVID Fallout Resources
Many patients with mold and biotoxin illness are also navigating Long COVID. Our COVID Fallout Resources hub brings together carefully written articles on spike protein, brain fog and POTS, mast cell activation and viral reactivation, hormones, and functional therapies, with clear notes on what research has established and what is still being studied.
Meet Your Educators
A physician and a clinical nutritionist who teach practitioners the clinical reasoning behind complex chronic illness.
Dr. Margaret Christensen, MD
MD, FACOG, IFMCP, ABOIM, CFMHC
Dr. Christensen is a physician, functional and integrative medicine practitioner, and women's health expert. A longtime Institute for Functional Medicine faculty member, she has spent years teaching clinicians and caring for people with complex chronic illness, including mold and biotoxin-related conditions. She hosted two Toxic Mold Summits featuring more than 80 expert interviews.
Dr. Gail Clayton
DCN, CNS, MS, RPh, LDN
Dr. Clayton is a former clinical pharmacist of more than 25 years who pursued advanced training in clinical and functional nutrition. She teaches Functional Biochemistry of Nutrition at the University of Bridgeport, is the author of multiple books on Organic Acids interpretation, and leads a BCNS-approved Organic Acids course for practitioners.
Connect, Learn & Grow With Us
Join our professional communities and follow along for ongoing education from Drs. Christensen and Clayton.
Professional Profiles
Dr. Margaret Christensen on LinkedIn β
Professional updates, functional medicine perspectives, and clinical education.
Dr. Gail Clayton on LinkedIn β
Articles on organic acids interpretation, functional biochemistry, and clinical nutrition.
Communities
Toxic Mold β with Dr. Gail Clayton (Facebook group) β
For anyone interested in mold illness, environmental exposures, and recovery education. Ask questions and learn alongside others.
Organic Acids Interpretation Support (Facebook group) β
For practitioners who want to discuss organic acid interpretation, case patterns, and related educational topics with colleagues.
Video & Updates
Mold Detox Diet on YouTube β
Webinars and videos on mold illness, detoxification, and recovery.
Dr. Gail Clayton on YouTube β
Teaching videos on organic acids and functional biochemistry.
Mold Detox Diet on Facebook β
News, new articles, and upcoming education.
Keep Learning
Additional Education
The Doctors Are In β Webinar Replays
Watch replays of our live Q&A webinar series with Drs. Christensen and Clayton, covering questions from patients and practitioners on mold, hormones, and complex chronic illness.
For Practitioners: Learning Center
Browse the practitioner articles by topic: patient assessment, interpreting labs, treatment sequencing, and working with highly sensitive patients.
Mold & Biotoxin Illness Learning Center
Free articles on mold illness, mycotoxins, mast cells and histamine, detoxification, gut health, and immune balance, useful for clinicians and for patient education.
This content is provided for professional education only and is not intended as medical advice for any individual patient. Clinical decisions should be based on each practitioner's own judgment, scope of practice, and the individual patient's needs.