What is Functional Medicine?
Updated: Jul 20
The answer might surprise you...
Welcome to the Gut Honest Truth blog where a Certified Functional Medicine Practitioner gives you digestible information to tackle your chronic health concerns.
That's me, Katie Morra; and in this blog I'm going to break down what functional medicine actually is, how it differs from conventional care, and what you can expect from working with a functional medicine practitioner.
And as always, working one-on-one for your specific needs is always our top recommendation, check out our appointment options to get started with one of our licensed health care professionals today.
A quick note: nothing in this post is meant to undermine conventional medicine. We deeply value traditional healthcare and believe the best outcomes happen when both worlds work together. Our goal is to fill the gaps that conventional care often doesn't have time or tools to address.
What Is Functional Medicine?
Functional medicine is a personalized, root-cause approach to healthcare. Rather than matching a symptom to a medication, it asks why the symptom is happening in the first place — and uses comprehensive testing, thorough history-taking, and an understanding of how diet, genetics, hormones, environment, and lifestyle all interact to answer that question.
The goal is to identify the underlying factors contributing to your health dysfunction and support your body in functioning as a well-oiled machine again. It incorporates the latest in genetic science, systems biology, and research on how environmental and lifestyle factors influence chronic disease — combined with individualized care and an active partnership between practitioner and patient.
How Is Functional Medicine Different from Conventional Medicine?
The primary difference is time, depth, and focus.
Most conventional medicine practitioners are seeing 20+ patients per day. That doesn't leave room to go much deeper than surface-level symptoms — and it's not their fault, it's a system problem. Only about 1 in 5 medical schools require 25 hours of nutritional training across their entire 4-year curriculum, despite the fact that over 80% of chronic disease is driven by nutrition and lifestyle.
Functional medicine practitioners spend significantly more time with patients, take a comprehensive history (including family history, lifestyle, diet, exercise, trauma, and the full symptom picture), and use both standard and specialized lab testing to understand what's actually driving dysfunction.
Another key distinction is optimal vs. normal lab ranges. Conventional medicine flags results as concerning only when they fall outside a broad "normal" range. Functional medicine uses narrower optimal ranges — because being "within normal" doesn't mean you're functioning optimally. This is how we catch trends toward disease before they fully manifest.
What to Expect in a Functional Medicine Appointment
Initial appointment: A detailed intake covering your full medical history, family history, lifestyle, diet, exercise habits, significant life events, and the symptoms that brought you in. From there, your practitioner will build an initial plan of care — which typically includes testing recommendations, dietary and lifestyle guidance, and supplement considerations.
Follow-up appointments (30-60 minutes): Review of test results, supplement adjustments, and an in-depth conversation about dietary, lifestyle, and behavior modifications tailored to your specific findings. When appropriate, referrals to complementary providers — acupuncture, chiropractic, mental health, endocrinology — may be part of the plan.
The Most Common Functional Medicine Tests
Stool testing — assesses inflammation, immune markers, digestion and absorption, and detects bacterial, viral, fungal, and parasitic infections. At GHT we primarily use the GI-MAP by Diagnostic Solutions Lab, which uses qPCR technology to detect and quantify microorganisms with significantly higher accuracy than standard stool culture methods.
SIBO breath testing — measures hydrogen, methane, and/or hydrogen sulfide levels in the small intestine. The Trio-Smart test (physician order required) is the only test that measures all three types.
Hormone testing (DUTCH Complete) — a comprehensive urine test assessing hormones, their metabolites, and organic acids. Gives a full picture of cortisol, estrogen, progesterone, testosterone, DHEA, and how they're all being produced and metabolized.
Thyroid panel — TSH, Free T4, Free T3, Reverse T3, TPO antibodies, and TgAb antibodies. Not just TSH.
Intestinal permeability (leaky gut) testing — zonulin via GI-MAP add-on, lactulose/mannitol urine testing, or the Gut Barrier Panel by KBMO.
Total toxic burden testing — mold, heavy metals, and mycotoxins via Vibrant America or Great Plains.
Post-infectious IBS testing — IBS Smart or IBS Sure to identify autoimmune SIBO driven by a prior foodborne illness.
Specialty testing — Lyme and co-infections, Epstein-Barr, viral load, and other condition-specific panels as warranted.
How to Find a Functional Medicine Practitioner
When looking for a functional medicine provider, make sure they have experience with your specific symptoms and conditions — not all practitioners specialize in the same areas. ifm.org is an excellent starting point to find a certified practitioner near you.
At GHT, we specialize in gut health, hormones, thyroid, IBS, food sensitivities, and chronic inflammatory conditions. We're 100% virtual and work with patients across the US.
What Does Functional Medicine Cost?
Most functional medicine practices operate on a cash-pay basis rather than insurance, given the time and depth of care involved. Initial consultations typically range from $200-500, and testing costs generally run $250-500 per test. Follow-up session costs vary by practice — always ask upfront.
At GHT, our GHT Method is a 6-month one-on-one program that includes comprehensive lab testing and ongoing practitioner support. Learn more here.
Why It Matters
Functional medicine takes a non-siloed approach to health — recognizing that your gut, hormones, thyroid, immune system, and nervous system don't operate independently. When one is off, the others feel it.
By focusing on root causes rather than symptoms, functional medicine can often catch disease trends early, reduce long-term healthcare costs, and create lasting change that symptom-management alone never achieves. It acknowledges the whole person — not just the complaint that brought you in.
If you've been told your labs are normal but you still feel terrible, or you've been managing symptoms for years without real resolution — that's exactly who functional medicine is designed for.
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