About Us

We are a group of elite health professionals highly skilled at identifying healing opportunities that no one else has uncovered for you. Using cutting edge functional lab testing, we’ll help you discover the hidden causes of your chronic health concerns.


We are elite functional health practitioners who have helped over 10,000 people get well and stay well naturally for over 20 years.


We test we don't guess. This is the core of how we operate. We use the high level lab data interpretation methods to find the underlying cause of your symptoms.


Unlike traditional medicine who provide medication to mask the symptoms you experience. We find the hidden stressors inside your body that are the cause of your symptoms so together we can eliminate the unwanted symptoms.

Did You Know?

We have been training health coaches longer than any other program? Check out our origin story here: 

The Perfect Complement™ to Medical Treatment

If you have a serious medical diagnosis or are under the care of a physician for medical treatment, you can still come to us for help. Using the natural, general principles of health-building serves as a grounding program during any medical crisis and often reduces the need for medication and surgery.  FDN is considered by many physicians to be the Perfect Complement™ to evidence-based medicine.


“As long as the progress of the stress cascade is not so compressed that our observations cannot be capitalized on, our method will always improve the health of our clients” ~ Reed

Bulletproof Power mind and body
American Association of Natural Wellness Practitoners
AADP Board Certified
American Association of Natural Wellness Coaches
Paleo FX
Wellness Mama
Chek Exercise Coach
Counsel of Holistic Health Coaches
American Holistic Health Association
Website Credentials

Our Advisory Team

Meet the FDNthrive® Advisory Board. We give expert counsel on the issues that matter to you. With countless years of combined Functional Nutrition experience, they’re passionate about leading the FDNthrive® community professionals. And you’ll get an entire team working on your case.

Reed Davis

Reed Davis

dr alan Weinstein

Dr. Alan Weinstein

dr Sandeep Gupta

Dr. Sandeep Gupta


Dr. Lori Valentine Rose

Dr. Thomas Polucki

Dr. Thomas Polucki

Our Mission

The Functional Diagnostic Nutrition® program has been producing elite health coaches since 2008. We’re the oldest health coaching program in the industry, and that experience shows in the quality of our practitioners. When you choose FDN®, you know exactly what you’re going to get.

Meet the Team

Reed Davis

Reed Davis

Founder & CEO
Reed is a triple Board Certified Holistic Health Practitioner (HHP), Nutritional Therapist (CNT), ANWCB Health Coach and a well - known expert in functional lab testing. He is the Founder of Functional Diagnostic Nutrition® (FDN) and the FDN Certification Course with over 3,000 graduates in 50 countries.
Brandy FDNthrive

Brandy Buskow

Managing Director
Brandy has been a certified FDN practitioner and member of the FDN team since 2014. She is passionate about helping new practitioners succeed so that they can successfully guide clients on their paths to get well and stay well naturally.
Jo FDNthrive

Jo Pate

Program Director
Jo has been a certified FDN practitioner since 2018, a member of the FDNthrive team since 2020, and an entrepreneur since 1992. She is passionate about giving new practitioners the tools to succeed with both client and business
Vicki FDNthrive

Vicki Stefancich

Program Administrator
Along with being our amazing program administrator, Vicki is a certified Functional Diagnostic Nutrition practitioner and a FDNthrive Practitioner. She is passionate about helping others on their wellness journey naturally.
Evan the health detective podcast

Evan Transue

The Health Dectective Podcast Host
Evan has been a certified FDN practitioner since 2017. The FDN system was the first thing in over 13 years to finally help himself and him mom with their chronic illnesses. Because of this, he is now dedicated to sharing this philosophy with as many people as possible.

It's time to take care of you!

It’s really hard to take care of other people or achieve your personal or professional goals when you’re exhausted, moody, and overwhelmed.

Tummy troubles, hormone imbalances, thyroid issues, and more can get in the way of looking and feeling your best.
Our FDNthrive® practitioners have seen it all. We know that all dysfunction comes from imbalances in your body, and we have the tools to teach you how to reverse most of your symptoms. When you take care of yourself, you can take care of everything else you want to do in life.


Take this quick, confidential survey to see if we can help you get well and stay well, naturally.

(We promise it’s worth every second!)