Qualified healthcare professionals can pursue comprehensive training through the Full Certification Bundle or select Individual Modules aligned with their current clinical interests and practice needs. Select scope-appropriate education is also available for the broader wellness community.
Both options provide clinician-level functional nutrition education. The right path depends on whether you want a comprehensive certification curriculum or focused training in selected subjects.
Complete Program
For healthcare professionals seeking NLFN’s complete, structured curriculum and a pathway toward the Functional Medicine Nutrition Specialist credential.
Focused Training
For new or returning clinical students who want to deepen their knowledge in specific subject areas without enrolling in the complete program.
Available learning formats vary by course, allowing you to select the option that best fits your schedule.
“I am thoroughly enjoying the COT bundle & supplement course, and learning so much!! I have already been sharing with my colleagues and mentees how wonderful the training is. Thank you for all you do, Susan. It is evident how much you love your work, and we all get the blessing” —Alice Baker, RDN
Registration for NLFN’s clinical training is open to licensed or credentialed healthcare professionals—including Registered Dietitians, physicians, Nurse Practitioners, Physician Assistants, pharmacists, chiropractors, and other qualified clinicians—as well as students enrolled in nutrition degree programs.
Participants must be legally qualified to provide medical nutrition advice within their scope of practice and the jurisdiction in which they or their clients reside.
“I finished the entire program a while ago, and now I’m here for more. The updates keep me current, confident, and highly effective. And the community and support keep me connected and on track in ways I didn’t expect.” —Marcia Sack, MS, RDN, CLT, FMNS
ALL NEW!
For health coaches, fitness professionals, wellness educators, and individuals with a strong personal interest in evidence-informed wellness education.
Learn practical exposure reduction, foundational wellness support, detoxification complexity, safety, how to evaluate questionable detox trends, and when referral to a qualified healthcare professional is appropriate.
Currently available only within The Detox Disconnect: Toxin Awareness and Detoxification Support.
Become an Authority with our Full Bundle Certification Program
Become an Authority; Get Certified in Functional Nutrition NOW!
Our 2026 cohort is underway, but you can still jump in!
It’s your choice—learn more about specific topics individually, or if career transformation is your goal, get it all in our bundled program, where you’ll become certified as a Functional Nutrition Specialist!
All training content is now offered in an extended access program for four years. This is everything we’ve got—all 550+ hours!
Bundle registrants enjoy a significant savings advantage over individual module registration, and even better, they receive a bundle bonus package valued at 8K!
This is the most comprehensive training in Functional Nutrition that exists today!
Course Details Here!
Live, interactive training currently open for registration — CPE eligible for RDNs.
This live 45-hour series has begun. Join now and easily catch up or simply review past content as you are able – you won’t be behind.
Headaches, fatigue, brain fog, and poor tolerance to caffeine, alcohol, or medications can all point to toxic burden and compromised detoxification capacity. Fully evidence-based. Recognize underlying issues and learn how to individualize detoxification support. The newly added Wellness Track runs parallel for health coaches, fitness professionals, and the wellness community.
This Live 50-hour series has already begun · Only a few spots remain – join in now and easily catch up or review at your own pace. You won’t be behind.
Explore assessment modalities, including laboratory biomarkers and clinical signs/symptoms, that help determine your patients’ optimal supplementation needs and provide the basis for responsible recommendations.
Spotlight Introductory Pricing — 20% off.
NEW Hybrid · 48 hours · On-demand recordings plus live sessions
For the client stuck on antacids or Miralax for years who still has symptoms. Move past fiber and probiotics to the real root of GI dysfunction, with assessment strategies, functional testing interpretation, and a 7-hour SIBO masterclass built in.
BONUS! Includes a brand-new 16-page Functional GI Testing Clinical Guide with enrollment!
13 hours · On-demand
The six core centers of health where chronic disease quietly begins — and how to catch the imbalances before they become the diagnosis. The foundation the rest builds on.
One-on-one · Also 20% off
Not sure where to start, or stuck on a case right now? Work directly with Susan — a tough case, lab interpretation, or business and career direction.
Self-paced, on-demand. Choose the topic that fits your specialty or the cases you see most.
20 hours · On-demand
The client whose labs are “normal” and who’s been told the thyroid isn’t the problem — but still has every symptom. Find the connection a standard workup misses.
7 hours · On-demand
The client whose bloating, constipation, and food reactions never resolve, no matter how many supplements they try. Beat SIBO — including the types and biofilms that keep it coming back.
36 hours · On-demand
Bloodwork came back “normal” and they’ve been told it’s all in their head — but they know something’s wrong. Read standard labs the way a functional practitioner does.
32 hours · On-demand
The client with hives, headaches, and IBS whose allergy tests all come back negative. Deliver lasting relief that goes past endless elimination diets.
28.5 hours · On-demand
Cognitive decline can begin twenty years before the first symptom. Learn the functional approach to preventing and even reversing it.
25.5 hours · On-demand
The woman told her heavy periods, mood swings, and fatigue are just “normal” and handed a pill. Learn how much nutrition can do at the root — for women and men.
49 hours · On-demand
Statins for a diabetic with normal cholesterol. “Calories in, calories out.” If the standard playbook has stopped working, here’s the root-cause approach — including where GLP-1 drugs fit and where they don’t.
38 hours · On-demand
Up to a third of cancer deaths trace to factors clients can change — and you don’t have to specialize in oncology to help.
23 hours · On-demand
Your client is doing everything right and still plateaus. The deep-assessment system that finds what a standard intake misses.
Note for RDNs/NDTRs: You may begin with the on-demand course now and apply your full purchase price to the corresponding live course when it is next offered. CDR CPEUs may be earned through the live offering, rather than the on-demand version by itself.
These aren’t part of the summer sale, but you can be first to know when registration opens.
Coming soon
The Methyl Cycle is the backbone of our physiology — its functional status determines your clients’ susceptibility to environmental toxins, hormone balance, and so much more.
Coming soon
Many clients with prolonged stress show signs of what’s commonly called “adrenal fatigue.” Learn to pinpoint the imbalance and provide targeted support responsibly.
Coming soon
Getting patients, knowing what to charge, and having a solid business strategy that serves your patients and fits your lifestyle — where were those classes in school?
Coming soon
Explore the critical roles of methylation, genomics, oxidative stress, gut function, and the immune system in managing ADHD and autism spectrum disorders.
Coming soon
A unique, interactive case work-up experience to boost your confidence using Integrative and Functional Medical Nutrition Therapy (IFMNT) in practice.
Student pricing: Full-time dietetic students, not yet interns, receive NLFN Gold membership free for one year! Subsequent years while still in school, membership is 1/2 off regular price. In addition, students are able to take the IFMNT Introductory course for 50% off regular price. Note: this option cannot be combined with any other offers. Occasionally, sale pricing may be a better option. Must provide proof of current student status. Note: Students are not qualified to take the IFMNT Certificate of Training until they have completed their nutrition degree or are enrolled in a full-time internship program. More membership info here.
Dietetic interns: Active, full-time dietetic interns qualify to enter the IFMNT Certificate of Training course, full bundle series. As well, they can register for any individual module training and receive an additional 10% off. Interns also qualify for 50% off their first year of NLFN membership. Members get 10% off individual training modules, so if an intern is also a member, that’s a double discount on training modules! above the NLFN Membership discount. (individual module registration only). For the membership discount to auto populate, members must be logged in before registering for training. Please write us to obtain an intern 50% off code for membership. or the 10% off code for training modules. Note: The full series Functional Nutrition certification bundle is already so deeply discounted, no other discounts apply.