What Are the Biggest Problems With Functional Medicine?
Functional medicine can be life-changing when done well. But it has developed some serious problems: over-complicated protocols, one-size-fits-all supplement stacks, dogmatic practitioners, and a growing focus on practitioner brand over patient outcomes. Knowing the red flags can save you thousands of dollars and years of spinning your wheels.
But before we dive in, I want to make one thing incredibly clear: functional medicine saved my life.
After years of searching for answers—being told I was just being dramatic, being handed prescriptions that masked symptoms without solving anything, being dismissed by specialist after specialist—I finally got a real diagnosis through a functional medicine practitioner who was willing to dig deeper. And I finally got a plan aimed at improvement, not just management.
So this is not a takedown. There are plenty of functional medicine practitioners doing it with integrity and making real differences in their patients' lives. I mean that.
But over the last few years, I've noticed a dramatic shift in functional medicine. What once centered itself around personalized care and individuality became the very same thing it was fighting so hard not to be: conventional medicine. We could argue about the why. That it's hard to standardize, replicate, and thus generate tons of profit off of a model that prioritizes individualization. That there's a reason that big pharma is one of the most profitable domains on the planet. But that's not the point.
The point is that, somewhere along the way, functional medicine lost the plot.
If you've had a bad experience with functional medicine, or you're currently in it and something feels off, this is for you. Let's talk about where it went wrong, what red flags to watch for, and what good integrative care actually looks like.
Is Functional Medicine Becoming Just Like Conventional Medicine?
In many cases yes. The same one-size-fits-all thinking and the same willingness to throw expensive interventions at a problem before addressing the basics have begun to permeate functional medicine. The difference is that the interventions are supplements instead of pharmaceuticals. Lets break down where this fell apart:
#1: It Became Nonsensical
I largely left the conventional medical system for one reason: it stopped making sense. When I had chronic GI issues as a teenager, no doctor wanted to look at my diet. Instead, they wanted me, a struggling sixteen-year-old, to try thirty different pharmaceuticals. Make it make sense.
I see this with clients constantly. Why tell someone they can reverse type 2 diabetes with diet when metformin exists? Why address the root cause of painful periods when the pill is right there? I even had a client whose doctor scheduled invasive foot surgery for chronic pain. Pain that disappeared entirely once we addressed the inflammation driving it. Crazy town!
And, for a while, functional medicine served as the direct antidote to this. It was root cause focused. It was going to spare you the unnecessary medications and treatments when there was a simpler explanation. Until it stopped doing so.
When I was first diagnosed with autoimmune issues, I decided to come off the birth control pill to minimize any outside factors that could be "gumming up my system" so to speak. It was all well and good until my period refused to come back. After almost a year with no period in sight, my functional medicine doctor recommended an expensive hormone test. Get to the root of what's going on. Made enough sense to me. So she ran the test, found out my hormones mirrored that of a prepubescent boy, and prescribed the supplements to boost my hormones. Still making sense.
Until, years later, I became a practitioner and saw this scenario through a whole new lens. During my first year of autoimmunity, I really struggled to eat. My BMI hovered somewhere between "give this girl a cookie" to "for the love of god, child, maybe start snorting butter." My doctor had even tested my cortisol, the stress hormone, at the beginning of this journey and it was through the roof. The only way my data could scream chronic stress any louder was if my labs came complete with sirens and alarm bells. And yet, she still decided it was worth ordering $1000 worth of tests and supplements to solve what gaining five pounds could have done. Because we "needed more data."
Where functional medicine once thrived was in always prioritizing the lowest hanging fruit, and only moving onto the next level once that first level had been addressed (at which point, there might not even be a next level to worry about). That practice makes sense. But somewhere along the way it became: let's throw everything at this problem and hope something sticks. I see this all the time in clients who come to me on a mold protocol when their bodies are too stressed, depleted, and inflamed to properly detox. In clients who've been recommended fifty different adaptogen powders when all they really needed was to take a deep breath every once in a while.
Red flag to watch for: if something seems needlessly complicated, ask yourself, "Is there lower-hanging fruit we haven't addressed yet?" The answer is almost always yes.
#2: It Became Standardized, Not Individualized
Functional medicine works because it treats everyone as a unique human. No two people have the same experience of the same condition, no matter how similar their stories are. So their treatment can't be the same either.
But there's a reason conventional medicine has been doing the one-size-fits-all thing for so long. It's easy. How simple is it to prescribe an acid blocker for acid reflux and call it a day? To dole out Miralax like Halloween candy rather than figure out why the constipation is happening in the first place.
And so, eventually, functional medicine followed suit. Because if the medicine is made from plants, how bad could this practice really be…
Why Does Functional Medicine Use the Same Supplements for Everyone?
It shouldn't, but increasingly it does. When practitioners apply the same supplement protocol to every patient with a similar diagnosis, they have abandoned the core premise of functional medicine: that every person's experience of the same condition is unique and requires an individualized response.
This is where you start getting ridiculous supplement protocols that nearly bankrupt the people following them when it's not even the right treatment. You get people put on berberine for blood sugar even though their microbiome is already depleted. Others put on glutamine for GI inflammation when they're already overactivated. Yes, berberine can help with blood sugar management for the right person. But it can't be doled out willy-nilly. Same goes for any supplement.
And that's how functional medicine, the branch of medicine that once had wildly impressive success rates, became conventional. Worse, it played right into the criticism that it was snake oil. Because when you recommend thousands of dollars of supplements that aren't even the right fit, the supplements start to look ineffective. When in reality, it was never the kind of treatment that was the problem. It was the care plan altogether.
Red flag to watch for: if your protocol looks identical to what your friend with the same diagnosis is doing, that's not individualized care. That's a template with your name on it.
#3: It Became Dogmatic
The first conventional specialist I ever saw told me I could cure my GI issues if I were to just "shut up and eat." I am no stranger to doctors being berating, demeaning, and outright rude. So when I transitioned to functional and integrative medicine, I was glad to be somewhere that felt constructive rather than preachy. For a while.
In the throes of my autoimmune treatment, I had a check-up with my functional medicine doctor. I had been diligently following AIP, which is no small ask for a twenty four year old. Well I was mostly following it. And in this safe space of care, I admitted to doing something that was actively going against AIP and my healing so she could get the full story and actually help me. I admitted to having three vodka sodas most weekend nights. (It was actually closer to four or five if I was being totally honest, but who's counting?)
After my admission, I'd never felt closer to being sent to the principal's office. And as a straight A student with authority issues, the principal's office was one I never saw firsthand, so this was a terrifying experience.
The doctor gently placed down her notepad in a way that wasn't as calm as it was calculated, and she glared at me over the rims of her glasses, one eyebrow raised. "How could you possibly think that was a good choice?" she chided, as though the thought of me drinking anything other than green juice and reverse osmosis water was utterly preposterous.
No trying to understand why I had adopted this counterproductive habit. No empathy as we work toward healthier alternatives. Just a slap on the wrist and a silent agreement that I would no longer be opening up.
Why Do So Many Doctors Make You Feel Judged For Being a Human?
As a practitioner myself, I have never understood why some practitioners think shame and judgment are effective for habit change. If someone doesn't feel safe talking to you about what's really going on in their life, how could you possibly help them work through it?
I see this on the internet all the time too. The functional medicine doctor who tells you if you ever look at seed oils, you'll spontaneously combust. The one who equates the amount of sugar you eat in a week to your likelihood of going to Hell. It's not that the logic behind these is wrong, seed oils, sugar, and alcohol can all increase your inflammation. But the judgment behind it? That's the problem. No one ever got better from being judged into submission. And the dogmatic, god-on-high ethos of functional medicine has absolutely perpetuated this issue.
Red flag to watch for: if your practitioner makes you feel like you need to hide the truth to avoid being scolded, that's not a safe therapeutic relationship. And a relationship that isn't safe can't actually help you heal.
#4: It Became About the Practitioners, Not the Patient
Do you ever feel like when you open your Instagram to see the latest happenings in the world of nutrition, you're watching celebrities rather than practitioners? Some of these practitioners have so many followers, they could genuinely fill a sold out show at MSG. Not inherently a bad thing. Not at all. The more people who are taking their health and nutrition seriously mean a world with healthier, happier people. I think we can all get behind that.
The problem is that the focus has shifted from patient to practitioner. It's become about what your favorite practitioner says, who they're arguing with online, and their brand new supplement rather than how they can best serve their followers. I'm not saying functional medicine has to be a selfless pursuit. Like any job, good practitioners deserve to be compensated well. But when the focus becomes the brand, the product line, the offer suite, rather than what the patient needs, that's where things start to fall off the rails.
Is My Functional Medicine Practitioner More Focused on Their Brand Than My Health?
It's worth asking. Red flag to watch for: When a practitioner's content is primarily about their achievements, products, and supplement line rather than patient outcomes and individualized care, that same energy tends to follow you into the practice.
What Does Good Functional Medicine Actually Look Like?
Good functional medicine is personalized, starts with the lowest-hanging fruit, treats you like an intelligent adult, and creates a space where you can be fully honest without fear of judgment. It should feel like a partnership, not a copy-paste protocol with your name on it.
If you've had a bad experience with functional medicine, I want to say this clearly: the field isn't broken. You may have just seen the wrong practitioner for you. And that distinction matters, because it means there is a version of this that actually works.
Good integrative care is still out there. It's personalized, not templated. It starts with the lowest-hanging fruit. It treats you like an intelligent adult who can handle the truth. It creates a space where you can actually be honest—about the treats, the stress, the days where the protocol went completely out the window—without feeling like you're being sent to the principal's office.
As you navigate your health journey, be discerning. If something feels needlessly complicated, expensive, or just doesn't sit right, you're allowed to look for something else. True functional medicine should serve you. Not the other way around.
And if you're trying to figure out what that actually looks like? That's exactly what I write about every week. Real talk on nutrition, healing, and what it actually takes to get your body working for you, without the shame, the $500 supplement stacks, or the one-size-fits-all protocols.
Subscribe to the newsletter here and I'll send you the kind of honest, no-BS guidance that functional medicine was always supposed to be.
FAQ
What are the biggest red flags in functional medicine?
The biggest red flags are: protocols that look identical to what other patients with the same diagnosis are doing, care plans that keep adding complexity instead of starting with the simplest possible intervention, supplement stacks and testing that cost thousands without addressing basics first or without a clear explanation as to why they’re being used, and practitioners who respond to honesty with judgment or shame. Any of these suggest the practitioner has drifted from the core premise of functional medicine.
Why is functional medicine so expensive and is it worth it?
Functional medicine can be expensive because it often involves lengthy appointments that conventional medicine doesn’t have the time for. On top of that, it often utilizes advanced testing and protocols. These comprehensive sessions and treatments are not typically covered by insurance, driving up the out of pocket costs. The cost can often be justified based on the positive returns these interventions bring. However, if something with your care is not sitting right with you, you reserve the right to push back and ask questions so you can find alignment in your care plan.
What is the difference between functional medicine and integrative medicine?
As defined by the Cleveland Clinic, “Integrative and functional medicine both treat the ‘whole person’ rather than just isolated symptoms. However, integrative medicine blends conventional Western medicine with evidence-based complementary therapies (e.g., acupuncture, yoga), while functional medicine focuses heavily on diagnostic testing to uncover and treat the underlying root causes of chronic disease.” In practice, these terms are often used interchangeably, so the most important distinction is not the label the practitioner uses, but rather if their care plan makes sense to you.
How do I find a good functional medicine practitioner?
Good databases for functional medicine doctors and dietitians include the IFM practitioner database (to find functional medicine doctors) and the IFNA practitioner database (mainly to find dietitians), though there are plenty of other places to look such as social media, google reviews, or even reddit. The best practitioners will offer discovery calls or a chance to talk through what care looks like so you can be aligned before proceeding. Word of mouth from people who have had meaningful results is usually more reliable than social media presence.
