By The Functional Medicine Report™

Originally published July 24, 2026 in Issue #002 of The Functional Medicine Report™

Key Takeaways

• Healthcare did not change through a single event. It changed one patient decision at a time, as people who felt rushed or unheard began assembling care from multiple sources.
• The growth of private-pay healthcare is a demand signal, not an innovation story. Patients are directing their own money toward experiences they judge to be valuable.
• When information was scarce, expertise was the advantage. Now that information is abundant, the scarcity is judgment.
• Root-cause thinking is no longer a differentiator on its own. It is becoming the price of admission.
• The next competitive advantage is behavioral personalization: helping a specific person understand, trust, and act on the plan.

What Is the Next Competitive Advantage in Functional Medicine?

Patients Didn’t Wait for Healthcare to Change. They Built a New Marketplace Instead.

“The next competitive advantage isn’t finding the root cause. It’s helping patients successfully act on it.” — Dr. Z

There was no single moment when healthcare changed.

No landmark law suddenly rewrote how patients sought care. No breakthrough technology instantly transformed what they expected from a practitioner. No conference ended with a declaration that medicine had entered a new era.

The shift happened quietly, one patient at a time.

One left an appointment with a prescription but no clear explanation for why they felt unwell. Another was told that laboratory results were normal even though daily life felt anything but normal. Another waited weeks for an appointment, spent only minutes with a clinician and returned home with questions that had never been answered.

That evening, many of them kept looking.

They searched online. They listened to podcasts. They joined patient communities. They ordered books, testing, supplements and wearable devices.

Some sought out functional or integrative practitioners. Others joined concierge or direct-primary-care practices. Increasingly, they turned to digital health platforms and artificial intelligence for information they could not find—or could not access quickly enough—inside the conventional system.

Individually, these decisions appeared insignificant. Collectively, they created a new healthcare marketplace.

Functional medicine, concierge care, health coaching, direct-to-consumer testing, wearable technology and AI-assisted health tools are often discussed as separate trends. They are not.

They are different responses to the same market signal: a growing number of patients wanted something they did not believe they were receiving.

Sometimes they wanted more time.

Sometimes they wanted a clearer explanation.

Sometimes they wanted to understand why a condition had developed rather than only how its symptoms might be managed.

Sometimes they wanted to participate more actively in decisions about their own health.

And sometimes, they simply wanted someone to listen long enough to understand the full story.

Patients did not necessarily begin looking elsewhere because they had developed an attachment to a particular philosophy of care. Most were not searching for functional medicine, concierge medicine or artificial intelligence as ends in themselves.

They were searching for results.

That distinction may determine what happens next.

The growth of private-pay healthcare is frequently described as a story of innovation. New models have certainly introduced new testing, technologies, services and ways of delivering care. But innovation alone does not create a market.

Demand does.

Patients have begun paying directly for services they once expected to receive primarily through insurance-based healthcare—or for services that conventional models were never structured to provide.

They pay for longer visits, deeper investigation, continuous access and detailed interpretation. They purchase laboratory testing, glucose monitors, sleep trackers, genetic reports, nutrition programs and personalized coaching.

They subscribe to health platforms and use AI systems to translate technical information into language they can understand.

This is more than dissatisfaction. It is an economic signal. People are directing their own money toward an experience they perceive as valuable.

That does not mean every product or private-pay model delivers on its promises.

Some services are evidence-based and clinically responsible.

Others are not.

More testing does not always produce greater clarity. More information can create confusion as easily as confidence.

Longer visits do not guarantee better decisions, and a personalized-looking protocol is not necessarily a truly individualized one.

The significance of the market shift is not that every alternative is better.

It is that patients are no longer waiting for the existing system to become what they need.

They are assembling their own version of healthcare from multiple sources.

A patient may continue seeing a conventional primary-care physician while also working with a functional medicine practitioner, using a wearable device, ordering a direct-to-consumer test and asking an AI platform to interpret the findings.

These choices do not always represent a formal rejection of conventional care.

They often reflect an attempt to fill the spaces between what the system provides and what the patient still needs.

Healthcare is no longer a single pathway.

It is an ecosystem of overlapping options, and patients are learning to move between them.

That has raised the standard for everyone.

“…patients are no longer waiting for the existing system to become what they need.”

What Happens When Information Is No Longer the Advantage?

For generations, medical information was concentrated inside clinics, hospitals, universities and journals. The practitioner possessed knowledge that the patient could not easily access, interpret or challenge. Expertise was valuable partly because it was scarce.

That world is disappearing.

Today, patients often arrive having already reviewed their results through an online portal, listened to hours of expert interviews, read patient forums, compared treatment approaches and asked artificial intelligence to summarize competing explanations.

Some bring months of data from devices that track sleep, heart rate, activity, glucose or recovery. Others arrive with genetic reports or laboratory panels they ordered without a practitioner.

The quality of that information varies enormously. Access does not guarantee accuracy, and information does not become clinically meaningful merely because it is available.

But the broader shift is undeniable: knowledge is no longer held exclusively by the practitioner.

Artificial intelligence accelerates that shift.

It can organize complex topics, summarize published research, explain terminology and generate possible questions in seconds.

It cannot safely replace clinical judgment, accountability or the practitioner’s understanding of the whole patient. But it can perform many of the information-management tasks that once made expertise feel inaccessible.

This does not make well-trained practitioners less important.

It changes what makes them valuable.

When information is scarce, the person who possesses it has an advantage.

When information is abundant, the advantage moves to the person who can determine what matters, identify what is missing, recognize what is unsafe and apply the right knowledge to the individual in front of them.

The defining scarcity in modern healthcare may no longer be information.

It may be judgment.

“When information is abundant, the advantage moves to the person who can determine what matters…”

Is Root-Cause Thinking Still a Differentiator?

Functional medicine earned attention by asking questions that many patients felt were missing from shorter, disease-centered encounters.

• What contributed to this condition?
• Which systems may be connected?
• Why did symptoms emerge in this person at this time?
• What underlying mechanisms should be investigated?

That broader inquiry changed the way many clinicians and patients thought about chronic illness. It encouraged practitioners to consider nutrition, lifestyle, environment, genetics, stress, physiology and personal history as interacting influences rather than isolated variables.

Those contributions remain important. Root-cause thinking, systems biology and individualized assessment are not becoming obsolete.

However, they may no longer be enough to distinguish a practice.

Concepts that once seemed confined to functional and integrative medicine are now discussed across podcasts, social media, consumer health platforms and corporate wellness programs.

AI can rapidly organize possible mechanisms. Laboratories market directly to consumers. Supplement companies provide protocols. Digital platforms promise personalization at scale.

The language of root causes is becoming easier to access. Successfully changing a patient’s life is not.

Two practitioners may identify similar physiological patterns, order comparable testing and recommend nearly identical interventions.

Yet one may consistently see stronger follow-through, better retention, more referrals and better outcomes.

The difference may not be the protocol.

It may be what happens after the protocol is delivered.

The Next Competitive Advantage Isn’t Finding the Root Cause

It is helping patients successfully act on it.

This is not a minor refinement to clinical practice. It represents a different understanding of personalization.

Consider ten women of similar age who share a Hashimoto’s diagnosis. Their laboratory patterns may overlap. They may have similar nutritional needs, comparable physiological drivers and many of the same evidence-based recommendations.

Yet the same plan may produce ten very different responses. One patient needs to see the evidence before she is willing to begin. She wants to understand the reasoning, the alternatives and the degree of certainty behind each recommendation.

Another becomes overwhelmed by too much information. A comprehensive plan that reassures the first patient may leave the second unable to decide where to start.

One has tried so many previous treatments that skepticism has become self-protection. Another is eager to begin but repeatedly overcommits, attempts every recommendation at once and cannot sustain the plan.

One needs measurable milestones. Another needs flexibility. One responds to a direct clinical explanation. Another must first understand how the changes fit into her work, family, identity and daily life. Their biology may look remarkably similar. Their path to implementation does not.

This is where healthcare conversations often become overly simplistic. When a patient does not follow a plan, the explanation is frequently reduced to motivation, willpower, compliance or readiness.

But people make decisions differently. They process risk differently. They build trust differently. They respond to uncertainty, complexity and authority differently. They become discouraged for different reasons and commit to change for different reasons.

Two patients can hear the same recommendation and experience it in opposite ways. One leaves feeling clear and capable. The other leaves feeling judged, confused or defeated.

That difference is not peripheral to the treatment. It helps determine whether the treatment ever occurs.

Private practices have devoted enormous energy to biological personalization: selecting tests, investigating mechanisms, modifying protocols and tailoring interventions to the physiology of the patient.

The next evolution may require an equally sophisticated approach to implementation. If biological personalization asks, “What is happening inside this body?”

Behavioral personalization asks, “What will help this particular person understand, trust and successfully carry out the plan?”

Neither question replaces the other.

Clinical excellence increasingly requires both.

Why Don’t Patients Stay With Functional Medicine Practices?

This is where the healthcare reset becomes uncomfortable for functional medicine. Patients who leave conventional care because they felt rushed, dismissed or unable to obtain answers do not automatically become loyal functional medicine patients. They may be willing to try a different model. They may invest substantial money in testing, consultations and care plans.

They may arrive deeply hopeful that this experience will finally be different. But hope is not permanent. Longer appointments are valuable only when the additional time produces meaningful clarity. Advanced testing is valuable only when it changes an appropriate clinical decision. A root-cause explanation is valuable only when it leads to a course of action the patient can understand, implement and sustain.

Patients did not leave one system because they wanted a more impressive protocol. They left because they wanted their lives to improve. They will evaluate private-pay practices by that same standard.

Most importantly: Is life actually getting better?

Functional medicine cannot ask conventional medicine to be accountable for outcomes while treating its own intentions as good enough.

A caring practitioner can still deliver an unrealistic plan. A scientifically sophisticated protocol can still fail in daily life. A patient can feel heard and remain unable to move forward. Listening matters. Trust matters. Time matters. None of them can be separated from results.

The market will not allow any model of care to remain unexamined forever.

What Do Patients Actually Compare Between Practices?

Patients now move between conventional care, private practices, digital platforms, consumer testing and AI with greater ease than ever before. As they do, they compare more than clinical philosophies.

They compare access.

They compare clarity.

They compare convenience.

They compare cost.

They compare how quickly questions are answered and how confidently recommendations are explained. They notice whether a practice treats them as a diagnosis, a customer, a partner, or a problem. They notice when a plan appears to be the same one given to everyone else. They also compare progress.

This does not mean private practices should attempt to behave like technology companies or promise instant results. Healthcare is complex. Chronic illness is rarely linear. Ethical practitioners must be willing to acknowledge uncertainty, revise hypotheses and explain when improvement may be slow. But uncertainty is not the same as vagueness. Patients can tolerate complexity when they understand the reasoning, know what is being measured and can see how the next decision will be made. The practices that thrive may not be those that offer the largest number of tests, therapies or supplements. They may be those that create the clearest path between clinical insight and patient action. That requires more than knowledge.

It requires the ability to translate complexity without oversimplifying it. It requires recognizing when the barrier is financial, logistical, emotional, cognitive or relational rather than physiological. It requires designing a plan around the patient’s actual capacity instead of the practitioner’s ideal scenario. It also requires intellectual honesty. A practitioner who can clearly explain what is known, what is suspected and what remains uncertain may create more trust than one who presents every theory as fact. A practice that measures outcomes, examines failures and changes its approach will be better positioned than one that assumes the patient was simply noncompliant.

In an information-rich marketplace, certainty can be manufactured. Credibility must be earned.

What Will Define Clinical Excellence in the Next Decade?

Diagnostic accuracy and technical expertise remain indispensable. Practitioners must understand physiology, evaluate evidence, recognize risk and know when a patient requires a different level or type of care.

But those competencies increasingly represent the beginning of clinical excellence, not its end. The practitioner of the next decade may be judged by something more demanding: not merely whether the right intervention was identified, but whether the right patient was successfully helped to carry it out.

That requires science and communication. Judgment and humility. Personalization and accountability.

It requires an understanding that patients do not experience healthcare as a sequence of diagnoses and protocols. They experience it as conversations, decisions, disruption, expense, uncertainty, setbacks and, when care succeeds, meaningful changes in how they feel and live.

Some organizations will compete by making healthcare faster. Others will make it cheaper or more convenient. Technology companies will continue trying to automate interpretation and deliver personalization at scale.

Private practices cannot out-compute artificial intelligence or outspend large healthcare corporations.

They do not need to.

Their advantage is the opportunity to understand the person behind the data and to adjust not only what is recommended, but how change is made possible.

That opportunity, however, is not automatically fulfilled simply because a practice is smaller, private-pay or functional. It must be developed deliberately and demonstrated through outcomes.

Twenty years ago, asking deeper clinical questions helped distinguish the practitioners who were willing to look beyond the diagnosis. In the years ahead, that may become the price of admission. The practices that define the next era will not necessarily be those that possess the most information, order the most testing or build the most elaborate protocols.

They will be the ones that most consistently turn sound clinical reasoning into changes patients can understand, implement and sustain.

Because the next competitive advantage is not finding the root cause. It is helping patients successfully act on it. Patients have been voting with their feet for years.

The question is no longer whether the healthcare marketplace is changing.

It is who will earn their vote next.

Dr. Z’s Take: The Question That Changed My Practice

For most of my career, I believed becoming a better practitioner meant becoming a better clinician.

Learn more. Read more research.

Attend another conference.

Master another laboratory marker.

Understand another biochemical pathway.

And to be clear, I still believe that matters. Our patients deserve practitioners who are relentless students. Medicine should continue to evolve, and so should we. But over the past few years, as we’ve trained more than 70,000 healthcare professionals, I’ve found myself thinking about a very different question. Ironically, it wasn’t a patient who led me there.

It was me failing as a patient.

I’m a teacher.

I’m a researcher.

I spend my life studying health, translating science, and helping practitioners understand increasingly complex clinical concepts. Yet there were moments in my own health journey when I caught myself not doing things I already knew would help me.

That realization was uncomfortable.

It wasn’t that I lacked information.

It wasn’t that I disagreed with the science.

I simply wasn’t consistently implementing what I already knew and believed.

And I remember thinking:

Why?

Why would someone who understands the research still struggle to follow through?

If I couldn’t answer that question for myself, how could I expect to answer it for my patients?

That sent me down an entirely different path.

Not deeper into physiology.

Deeper into people.

I became fascinated by what I now think of as the science of implementation or what I call “biohacking human behavior”. Why does one person embrace change while another resists it? Why does one patient need data before they’ll take action, while another needs certainty, encouragement, accountability, or simply permission to start small?

Why can two intelligent, motivated people hear the exact same recommendation and walk away with completely different outcomes? The more I studied, the more convinced I became that implementation isn’t an afterthought to great care. It’s part of great care.

For years, functional medicine has helped move healthcare toward biological personalization. We learned to look beyond symptoms and diagnoses and ask better questions about what was happening inside the body. I believe the next frontier is just as important. Learning how to personalize implementation.

Not changing the science, but changing how we help human beings successfully apply it. Because patients don’t experience our understanding of physiology. They experience whether their lives get better. And perhaps that’s the question every practitioner should begin asking.

Not simply: “Did I give the right recommendation?”

But also: “Did I give it in a way this particular human being could actually succeed with?”

I don’t believe the greatest breakthrough in healthcare will necessarily be another laboratory marker, another protocol, or another therapy.

I believe it may come from helping more people finally benefit from the extraordinary knowledge we already have.

Because the next competitive advantage isn’t finding the root cause. It’s helping patients successfully act on it. As private pay practitioners we don’t just have to only care for the patient, they are also a consumer who votes with their dollars. It is a complex path to walk with a higher demand for excellence.

FAQ

Sources:

1. Growth In Number Of Practices And Clinicians Participating In Concierge And Direct Primary Care, 2018–23
2. KFF Tracking Poll on Health Information and Trust: Use of AI For Health Information and Advice
3. Americans Turning to AI to Supplement Healthcare Visits
4. What’s your score? Insights on wearables and connected devices from Rock Health’s 2025 Consumer Adoption Survey
5. Wearable Devices and Data Sharing in the US