About FDN

“Functional Diagnostic Nutrition® is an emerging field and growing body of work that bridges the gap between Nutrition and Functional Medicine”

Reed Davis- founder of FDN®


 The public is crying out for drug-free, natural solutions to help them with the cause of their health problems instead of just treating the symptoms.

FDN® identifies healing opportunities and resolves most common health complaints at the causal level.


Where Can FDN Help?

  • Allergies
  • acne
  • rosacea
  • Blood sugar problems
  • Depression and anxiety
  • Emotional fragility
  • Headaches and fogginess
  • Indigestion and bloating
  • Inflammation and pain
  • Insomnia and wakefulness
  • Low sex drive
  • PMS, skin, and hair problems
  • Fatigue and lethargy
  • Weight gain and weight loss
  • Muscle and joint pain

And many other consequences of the chronic stress response!


For Those Who want a Little More Detail...

Our bodies have an amazing ability to heal if given the necessary materials and opportunity. We utilize a holistic nutrition based model that uses functional laboratory assessments to identify underlying conditions at the root of most common health complaints. FDN® embraces metabolic individuality and provides a step-by-step method that allows you to achieve repeatable, consistent and successful clinical outcomes. The goal of FDN is to restore health and enhance performance, particularly within the pillars of health: hormoneimmunedigestivedetoxificationelimination and mucosal barrier systems. FDN protocols are potent, proven, professional and individualized to identify healing opportunities and build health.  


What if I’m Already Under Medical Care?

Functional Diagnostic Nutrition® (FDN) is a stand-alone, health-building, self-care program which may also be used by people who are under medical care as a holistic grounding program. The holistic approach we use in FDN is complementary to and easily integrated with most medical approaches in use today. Whether FDN is used preventatively or to complement medical, it is certainly in the best interest of the clients who elect to use FDN services. Diagnosing and treating disease is often critical, but there is much more to achieving health and happiness.  



It’s time to stop chasing symptoms and start focusing on the root causes that are really holding you back from feeling and looking great!



Common Diagnostic Nutritional Testing Available


1.  Functional Adrenal Stress Profile (205)

Evaluates the impact of chronic stress on endocrine function by measuring bioactive hormones. This is a saliva test that looks at cortisol levels at 4 points through out the day, DHEA, Estradiol, Estriol, Progesterone, Testosterone and Melatonin.


2. Intestinal Permeability- Mucosal Barrier Function (304)

Healthy function of the intestinal barrier is essential to disease prevention and overall optimal health. Being on the front lines in defending the body, the mucosal layer, the surface barrier of the GI tract, is exposed to a multitude of stressors, antigens, pathogens, imbalances of neurotransmitters, toxins and medications. These can weaken and break down the protective barrier. This panel evaluates the integrity of the gut’s mucosal barrier, antigen penetration, dysbiosis, leaky gut, malabsorption, dietary protein sensitivity, secretory IgA production, intestinal permeability, crypt hyperplasia, antibody resistance to; Candida, aerobic and anaerobic bacteria and dietary proteins.


3. Metabolic Assessment Profile (101)

The 101 is a test composed of 3 critical markers, measuring dysfunctional protein digestion, oxidative cellular damage and detoxification capacity.

       A. Urinary Indican

 A positive indicant indicates poor digestion of dietary protein and/or overgrowth of bacteria in the intestines. Problems with protein digestion can be caused by factors such as helicobacter pylori and parasite infections, dysbiosis, lack of digestive enzymes and liver problems. The inability to digest protein can lead to bowel putrefaction and have adverse affects on glycemic control and hormone balance.

       B. Urinary Lipid Peroxides

High levels of lipid peroxides are associated with a multitude of symptoms, degenerative diseases and premature aging. Lipid peroxides is an index of cellular membrane damage caused by the action of free radicals as a result of oxidative stress. Oxidative stress can result from lifestyle problems such as excessive exercise, insufficient sleep and cigarette and alcohol abuse; it also results from exposures to chemicals, heavy metals, radiation and excess stress. The lipid peroxide test indicates the need for antioxidant support and lifestyle change.

       C. Urinary Bile Acid Sulfates

UBAS is a direct measurement of liver function. The enterohepatic circulation regulates bile acid levels and under normal circumstances- given a healthy liver- small amounts leak into the blood stream to be converted to sulfate and excreted in the urine. Compromised liver function leads to a build up of toxic substances that can damage liver cells and lead to increased risk for cancer and a variety of other degenerative diseases. An elevated UBAS level indicates the need for nutritional liver support and removal of toxic exposures.

* A positive result on any of the above markers may be related to a biochemical/metabolic source of chronic stress*


4. Microbiology- Pathogens (401H)

This stool analysis determines the presence of ova and parasites such as protozoa, flatworms, and roundworms; Cryptosporidium parvum, Entamoeba histolytica, and Giardia lamblia antigens; bacteria, fungi (including yeasts), and occult blood; and Clostridium difficile colitis toxins A and B, as well a H. Pylori. Sensitivity to pathogenic organisms will be reported as necessary. Causes for concern are both an overgrowth of microorganisms that are normally present in the intestines and the presence of microorganisms that are not normally present in the intestines. Either condition signals that major physiological pathways in the intestinal environment are outside homeostatic limits and are chronic stressors.


5. Food Sensitivity testing 

These tests are for identifying delayed food sensitivities through dried blood spot or serum. Food sensitivities can play a role in many common health conditions. Digestive problems, headaches, joint and muscle pain and fatigue are all symptoms, which can be caused by our immune system’s reaction to foods, additives or other substances in our diet.  Any food or food additive can be reactive, even foods considered healthy. In addition, reactions can be delayed and /or dose dependent. This means we may not feel the effects of a reaction until for hours or days after we’ve eaten a reactive food or additive or enough of it. For all of these reasons, dealing with food sensitivities on your own can be very difficult. Testing is a great way to remove the guesswork.  

* These are just a sample of the diagnostic tools that we employ to identify underlying causes and contributing factors. There are many more tests available to help with individual client concerns and issues*