Introducing a new self-paced, 40-hour Functional and Ancestral Nutrition course

Functional Nutrition Mastery

Discover your confidence and power to create better health for yourself and others

Go beyond the basics! Get the deeper knowledge, the practical skills, and the real-world tools you need to create more vibrant health. Prevent and reverse chronic disease for your patients or coaching clients—or even just for yourself and your family.

Here’s some of what you’ll get in this evidence-based Ancestral and Functional Nutrition course:

  • A deep dive into Functional Nutrition, macronutrients, and micronutrients
  • Practical tools to use with patients and clients to support successful diet modification
  • Dozens of personalization strategies based on differing client goals and conditions
  • The top lifestyle changes to pair with diet changes to ensure the best health outcomes

See Program Overview

Choose Your Own Pace

  • Two hours/week spread out over 24 weeks
  • One hour/day for about six to eight weeks

Choose one of the schedules above—or create your own, custom pace to fit your unique life. Our 24-lesson, 40-hour course is designed to be flexible. Give yourself a comfortable pace, with some space between your lessons, to maximize your learning and retention.

You'll get

24 Self-paced Lessons

Each lesson contains several short instructional videos, making it easy for you to fit your learning into whatever schedule best suits your life.

Audio and Transcripts

Choose the delivery method that best fits your learning style. Listen as you drive, or grab a cup of tea and read from your comfy chair.

Handouts and Guides

Every lesson also contains powerful tools to expand your learning, and empower you to immediately use what you’ve learned.

Retention Quizzes

This course incorporates the latest in learning theory, including low-stakes quizzes, to help you maximize your learning and retention.

See Program Overview

Special Bonus Course

New to Functional Health & Nutrition? Don’t worry.

When you enroll in Functional Nutrition Mastery, you will also get access to the separate introductory course, Getting Started with Functional Nutrition. While most of you have spent time on our site and even read Chris Kresser’s books, The Paleo Cure and Unconventional Medicine, those of you who are new to all this will have no trouble catching up by taking this optional, introductory, 10-hour course.

In this intro course, we’ll cover:

  • organic-plant-grow
    The Paleo “diet” versus Ancestral Health and the Paleo “template”
  • Local, organic, wild, and nose-to-tail eating
  • An introduction to macronutrients and nutrient density
  • Elimination diets, food reintroduction, and minimizing inflammation
  • The 30-day Paleo Reset Diet and meal planning apps and tools

Start your deep dive into Functional Nutrition today!

Enroll in Functional Nutrition Mastery, including the bonus Getting Started course



Enroll Now

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Your satisfaction is 100% guaranteed!

We offer a 14-Day Money Back Guarantee. If you don’t absolutely love this course, you can request a full refund by emailing our support team within 14 days of the course registration date and we’ll happily issue you a refund. No questions asked!

Who should take this course:

  • Licensed practitioners who may not have a nutritionist on staff or on call, but still want to be able to provide solid nutrition advice to their existing patients.
  • Allied health professionals and health coaches who’s past training did not provide enough Functional Nutrition.
  • Health enthusiasts, at any level, who want to help themselves now, and perhaps use this as a first step in exploring a future career in health and wellness.
Not sure if this course is right for you? Here’s a more detailed look at what you will learn:

Course Description & Learning Objectives

This course provides health coaches, allied health professionals, and non-licensed or licensed practitioners with:

Part One

Functional Nutrition

An in-depth, comprehensive, applied foundation in Functional Nutrition core concepts

Learning Objectives
  • Understand Functional Nutrition and its approach to wellness
  • Recognize the benefits of a Paleo nutritional approach for minimizing inflammation and oxidative stress, and supporting nutrient density
  • Learn macro and micronutrients, including ratios, values, food sources, and their role in a nutritionally dense Paleo nutritional approach
Part Two

Diet Modification and Advanced Personalization

A flexible Paleo template approach to Functional Nutrition

Learning Objectives
  • Explore Paleo nutrition modifications (e.g., timing, frequency, caloric needs, intermittent fasting, carbohydrate backloading)
  • Discover Paleo nutritional approach variations (e.g., women, men, athletes, kids, low FODMAP, histamine intolerances, Autoimmune Protocol (AIP), ketogenic, Potato Hack, vegan, vegetarian, and more)
  • Learn tips for Paleo on a budget, meal planning, food shopping, and food preparation
Part Three

Functional Health

Research- and evidence-based applied foundation in Functional Health considerations beyond nutrition

Learning Objectives
  • Understand technology addiction and its influence on health
  • Recognize the core concepts of physical activity, sleep, stress, and environmental toxins, and evidence-based approaches
  • Realize the health benefits of cultivating pleasure, play, connection, and getting outside
Part Four

Considerations for Chronic Conditions

Understand the 12 most common chronic health conditions, disorders, and dysfunctions, and their relationship to Functional Nutrition and Health core concepts

Learning Objectives
  • Discover a functional health perspective on mental health conditions and disorders (e.g., anxiety, depression, cognitive disorders)
  • Understand common health conditions, issues, disorders, and dysfunctions, and evidence-based Functional Health approaches: High Cholesterol and Heart Disease, High Blood Pressure and Hypertension, Diabetes and Blood Sugar Disorders, Metabolic Syndrome, GERD, IBS, SIBO, Other Digestive Problems and Disorders, Autoimmune Disorders, Thyroid Disorders, Skin Conditions, HPA Axis Dysfunction, Weight Loss, Fertility, Pregnancy, and Breastfeeding

The material that you learn in this course can directly enhance your work as a health coach, or allied professional—within your scope of practice. The Functional Nutrition and Functional Health knowledge you gain here empowers you to better understand the full scope of factors contributing to your clients’ overall health, as well as their success in achieving their health goals. Health is holistic. No matter what your role is with a client, having a solid grasp of these concepts will allow you to recognize risks and opportunities to your clients’ success and better support them in their holistic health journey.

Meet Your Instructors

Chris Kresser MS, LAc

Chris Kresser MS, LAc

Chris Kresser M.S., L.Ac. is the co-founder of the California Center for Functional Medicine, founder of Kresser Institute, creator of, and the New York Times best-selling author of The Paleo Cure and Unconventional Medicine. He is one of the most respected clinicians and educators in the fields of Functional Medicine and ancestral health and has trained over 1,500 clinicians and health coaches in his unique approach. Chris was named one of the 100 most influential people in health and fitness by and has appeared as a featured guest on Dr. Oz, Fox & Friends, and in other national media outlets.

Laura Beth Schoenfeld, RD, MPH

Laura Beth Schoenfeld, RD, MPH

Laura Schoenfeld, MPH, RD is a licensed registered dietitian and women’s health expert trained in Functional Medical nutrition therapy. She has been a staff member for Chris Kresser since 2012, and is a former teaching assistant at the Kresser Institute, where she assisted in the creation of educational materials for both the practitioner and health coach training programs.

Her passion is empowering women to nourish their bodies, develop true strength, and ultimately use their improved health to pursue their purpose. Laura guides her clients in identifying and implementing diet and lifestyle changes that allow them to live a healthy, fit, symptom-free life without being consumed by thoughts of food and exercise. She draws from a variety of sources to form her philosophy on nutrition, including ancestral diets, principles of biochemistry, current research, and clinical experience. Her areas of expertise include women’s hormones and fertility, gut health, autoimmune disease, athletic performance, stress management, skin health, and weight loss. Recognizing that health goes far beyond just diet and exercise, Laura teaches her clients how to focus on and implement life-changing mental and spiritual health habits as well, including changing their thoughts and beliefs to ones that drive health-supporting decision-making around food, fitness, and life in general. Her greatest mission is to help health-conscious women realize that, while their health is priceless, they are so much more than a body. When she’s not educating and serving her coaching clients and community, Laura loves traveling with her husband, Sundays with her church family, hikes with her dog, beach trips, live music, and strength training.

Professional website | LinkedIn | Other website

Tracey Long, MPH, RDN

Tracey Long, MPH, RDN

Tracey is a registered dietitian with specialty certification training in Integrative and Functional Medical Nutrition Therapy and The Bredesen Protocol to End Alzheimer’s. She owns a private practice, Big Picture Health LLC, in Hendersonville, NC, where she sees clients in person and using video and phone consultations.

She takes a holistic and individualized approach to client care. Another aspect of her practice is providing community education and education for other healthcare providers, including a course in Nutrigenomics. She specializes in working with clients with neurodegenerative conditions, biotoxin illnesses and gastrointestinal conditions, and Nutrigenomics. Tracey is a teaching assistant for The Kresser Institute ADAPT Health Coach Training Program. She recently co-authored a chapter on Therapeutic Diets for a textbook, “Integrative and Functional Medical Nutrition Therapy: Principles and Practices.”

Tracey’s education includes a Master of Public Health; emphasis Nutrition and Exercise Physiology from the Colorado School of Public Health where she studied under Dr. Loren Cordain, PhD, and author of The Paleo Diet. Additionally, her education and training includes a B.S. Dietetics, ACSM-certified Exercise Physiologist and Cancer Exercise Trainer and Registered Yoga Teacher.

Regarding her expertise in nutrition, Tracey encourages an individualized approach to ancestral eating focusing on whole foods and supporting local food. Tracey often uses a low-carb, high (healthy)-fat food plan, also known as a ketogenic food plan, and intermittent fasting to assist many of her clients with a variety of health challenges such as Alzheimer’s disease, Parkinson’s disease, PCOS, type 2 diabetes, and infertility. Her goal is to help clients regain their health and live a life of passion and purpose unencumbered by poor health. She uses nutrition, lifestyle modifications, targeted supplements, and Functional Medicine testing when appropriate with her clients. She also sees the benefits of collaborating with other providers to help optimize client health.

Her personal interests include hiking with her husband and dog, teaching yoga, foraging for food in the mountains of Western North Carolina, growing medicinal herbs and produce, paddle boarding and visiting her three grown daughters in Colorado.

Professional website | LinkedIn

Lucy Mailing, PhD

Lucy Mailing, PhD

Lucy Mailing received her Ph.D. in Nutritional Sciences from the University of Illinois and her undergraduate degree in Biology from Kalamazoo College. Her dissertation research focused on the effects of diet and exercise on the gut microbiome and gut barrier function in states of health and disease. She plans to continue her training and complete her M.D. at the University of Illinois in 2024.

Lucy is also the founder, chief scientific researcher, and author of NextGen Medicine, a website dedicated to evidence-based information about gut and skin health, nutrition, the microbiome, and exercise science. She takes an individualized, integrative approach and regularly consults with clients with gastrointestinal and dermatological conditions.

Lucy has authored seven peer-reviewed publications, including a highly cited review article on exercise and the gut microbiome. She is currently involved with ongoing research at the University of Illinois to determine the effects of the autoimmune protocol diet on the gut microbiome and intestinal barrier function in eczema and psoriasis, and to examine the effects of exercise training on the gut microbiome in inflammatory bowel disease.

Lucy regularly presents her research at national and international conferences. She was named an Emerging Leader in Nutrition Science by the American Society for Nutrition in 2017 and received the Young Scientist Award at the International Probiotics Conference in 2019. Lucy is also a member of the American Gastroenterological Association and American Physician Scientists Association, and is a student fellow of the International Scientific Association for Probiotics and Prebiotics.

Lucy has been a member of the Chris Kresser LLC research team for four years and currently serves as Senior Research Associate for Kresser Institute.

Professional website | LinkedIn

Why choose Functional Nutrition Mastery today?

Knowledge is not enough—you need practical application

At Kresser Institute, we are known for always taking you beyond theory into real world practice. This course not only gives you the information you need, but also the skills, tools, and resources to ensure successful diet modification, like:

  • Handouts, tools, and resources that help you use what you’ve learned
  • Pantry cleanout, meal planning, and other practical topics for successful diet change
  • Over two dozen ways to personalize diet recommendations based on client-type, diet-type, and pre-existing chronic conditions
Woman meal prepping

An innovative approach to learning

The traditional methods for learning (which you were taught in school) don’t work. So we don’t use them. No “firehose” of information. No brute-force memorization. These methods don’t help you actually absorb or use information. Instead, we use the “sprinkler” method:

  • Content is delivered a little bit at a time, over a longer period of time.
  • Topics unfold in a way that mimics how you will apply them later.
  • We use low-stakes quizzes for increasing comprehension and retention.
Woman learning via online course

This program was created by a globally renowned clinician, bestselling author, and widely respected authority in the field of Functional Medicine.

As the founder of the Kresser Institute and the ADAPT training programs, Chris Kresser has personally treated thousands of patients and trained over 2,000 practitioners and health coaches in more than 40 countries around the world in his unique approach.

Chris Kresser speaking

Start your deep dive into Functional Nutrition today!

Enroll in Functional Nutrition Mastery, including the bonus Getting Started course



Enroll Now

  • Secure Checkout

Your satisfaction is 100% guaranteed!

We offer a 14-Day Money Back Guarantee. If you don’t absolutely love this course, you can request a full refund by emailing our support team within 14 days of the course registration date and we’ll happily issue you a refund. No questions asked!

Frequently Asked Questions

How will the course materials be delivered to me?

Upon registration for the course, you will receive information by email on how to log into the course learning portal. The learning portal is viewed through your browser, so all you need is an internet connection and a computer or mobile device. We recommend the Google Chrome browser, but any up-to-date browser and operating system should work just fine. The course is compatible with Mac and Windows computers, and iOS and Android devices.

Inside the learning portal, you’ll find the course materials divided into lessons. Each lesson consists of video presentations, along with audio files and transcripts of the presentations, so that you can study the material in the way that best suits your unique learning style. You’ll also find handouts, quizzes, and links to additional resources. Audio files, transcripts, and handouts can all be downloaded to your computer for offline viewing.

How long will I have access to the course?

You’ll have access to the course for one year from the time that you register for the course. You can download course materials that you wish to save for a longer time period.

What is the best way to reach customer support with any questions or concerns I have?

You can contact our customer support team at and we’ll be happy to answer any questions you have! The ADAPT Courses Terms & Conditions page may answer some of your questions.

What if I find that this course isn’t a good fit for me after purchasing it?

No worries! We want you to be thrilled with the knowledge you’ll get from this course. If you aren’t 100% happy with it, simply contact our support team at within 14 days of your course registration date and we will give you a full refund.

If I already took the ADAPT Health Coach Training Program or ADAPT Practitioner Training Program, should I take this course?

No, this course covers much of the same material that is already covered in our Health Coach and Practitioner programs. If you are a current or past student of those programs, we don’t recommend that you take this course. This course is not approved for CEUs for A-CFHC recertification.

What is a “self-study” course?

A self-study course is one where you have complete control of your learning experience. You have access to all course materials from day one, and you can choose the order in which you learn the material, how fast you progress through the course, and when you need to take breaks. This type of course is best for the solitary learner, who does not wish to interact with course faculty or fellow students. While this course does not provide direct contact with faculty or students, our technical support team is standing by if you have any issues accessing the course.