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Is Functional Medicine Science or Quackery? - Blog Image

Is Functional Medicine Science or Quackery?

BY: Andrea Nakayama

DATE: 2019-04-02

I’m always surprised when I discover that some people think Functional Medicine is quackery. I’m convinced the skepticism stems from a lack of understanding. Some may argue that Functional Medicine lacks scientific backing,  evidence of efficacy or, even a recognized board certification. However, a deeper understanding of Functional Medicine’s principles reveals a medical model rooted in science, evidence, and personalized patient care providing a compelling approach to health and healing.

The history of Functional Medicine

In the late 1800s, Sir William Osler claimed that “It is more important to know what patient has the disease than to know what disease the patient has.” He insisted on teaching medicine outside of the classroom, taking it instead to the bedside. In fact, Osler wanted his epitaph to read, “He taught medical students at the bedside.” 

Osler was not alone.

Functional Medicine and Functional Nutrition are rooted in a kind of healthcare that:

  • honors the truth that each patient is unique

  • acknowledges the need for curiosity throughout the clinical process

  • recognizes the need for systems thinking in assessments, tracking, and recommendations

  • and, emphasizes the


    in healthcare

Functional Medicine is a personalized approach to health

Throughout history, doctors and medical researchers have been heralded for their efforts to treat people as individuals with specific needs and unique conditions that lead to their signs, symptoms and diagnoses. But somehow we continue to slip-slide back into misinformed cultural desires. Those desires are for the quick-fix (where one doesn’t exist), the band-aid approach (that masks the roots we actually need to uncover), or the seductive theory that may be interesting to study in the classroom but holds little weight by the bedside.

No wonder there is a growing population of people suffering from chronic conditions not addressed by these types of approaches!

Functional Medicine has its basis in bioindividuality. This principle states that we are all biologically and genetically unique; that we are all impacted by myriad and diverse life experiences and exposures. Because of bioindividuality, each person needs different nutrients and therapies, in particular forms and doses, in order to heal and achieve well-being. In other words, each patient is unique.

A functional approach to health and healing considers how the unique parts within a person’s body, along with their unique history and their unique habits, interrelate and understands how these systems work together over time.

Functional Nutrition’s roots in Orthomolecular Medicine

“Ortho” means “normal.” “Orthomolecular” is a term that was coined by Linus Pauling in 1968. It describes a method that uses nutrients and “normal” constituents of the body in optimal amounts as treatment and therapy. In other words, nutrients are introduced and utilized to fine-tune a person’s biology to improve function and preserve health.

Orthomolecular Medicine is one of the forerunners of a Functional approach. It fundamentally states that the basis for health is good nutrition, and that “good nutrition” is different for each of us because we all have unique nutritional needs.

Let’s consider an example: a study might conclude that eggs are good for brain health and development because of their high concentration of the nutrient choline. Yet for someone who’s taken several rounds of antibiotics in their childhood and developed an immune response to eggs as a result (as is true for me), eating eggs may not help. Instead, eating eggs may harm that person’sy brain health—possibly contributing to systemic inflammation.Therefore, I avoid eggs, even though I believe the egg to be a perfect whole food in and of itself. In doing so, I take in less choline on a regular basis than people who have a daily omelet or hard-boiled egg for breakfast. So I, and others who steer clear of eggs for their own bioindividual reason(s), will have a greater need to address choline intake, making sure to get this important nutrient elsewhere.

Another example would be that someone with an MTHFR polymorphism, if activated, may have a greater need to address their body’s needs for folate, and may even need to address how the body has grown accustomed to functioning without access to it.

How Functional Nutrition compliments Western medicine

Take the topic of “anti-nutrients”, for example. An anti-nutrient is any “food” that requires more nutrients for the body to use it than the food itself supplies. Refined sugar can be considered one such anti-nutrient. It supplies zero nutrients while requiring magnesium, zinc and B vitamins (to name a few) for its metabolism.

Anti-nutrients are a common cause of subclinical deficiencies, which refer to a deficiency in one or more essential nutrients that is not severe enough to cause obvious symptoms or clinical signs of deficiency, but is still significant enough to negatively impact health and well-being. These deficiencies often fly under the radar of Western medicine due to traditional lab tests, or at least traditional lab test interpretations.

And these upstream nutrient deficiencies can lead to downstream complications of the nervous system, the energy systems and, most particularly, the immune system.

Often unrecognized, these subclinical nutrient deficiencies can lead to clinical complications of the nervous system, the energy systems, and the immune system. This subclinical realm is sometimes referred to as “hidden-hunger.” With Functional Medicine (and Functional Nutrition in particular!) we can recognize and address “hidden hunger,” bringing about metabolic and physiological homeostasis to prevent clinical issues before they occur.

Far from quackery, Functional Medicine (and Functional Nutrition, by extension) offers a scientific, logical, patient-centric approach to healthcare. It makes good medicine because it takes into account the individuality of each patient, recognizing their unique biology and history. True to it’s name, it can help your practice function optimally.

Related Blog Posts

Functional Medicine
Functional Nutrition
Part 1: What’s Functional and What’s Not

Andrea Nakayama

By: Andrea Nakayama, FxNA Founder & Functional Medicine Nutritionist

Functional Nutrition Alliance provides the comprehensive online Functional Nutrition training in the Science & Art of the Functional Nutrition practice. Learn to address the roots of your clients’ suffering with client education, diet & lifestyle modifications.


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