Patient Communication: Explaining Root Cause Thinking Without Overpromising
Level 3, Clinical application
In brief
Root cause thinking can inspire patients, but it can also create unrealistic expectations. Honest communication describes contributing factors rather than a single cause, uses probabilistic language rather than promises of cure, sets realistic timelines, distinguishes established from uncertain evidence, avoids blame, supports rather than undermines conventional care, checks understanding and follows professional rules on advertising and claims.
One of the attractions of functional medicine for patients is its promise to look for the root cause. Many have felt that their previous care only managed symptoms, and the idea of finding out why they are unwell is powerful. But that promise carries risks. Patients may expect a single, discoverable cause, a complete cure, rapid results, or proof that their previous care was wrong. Practitioners who communicate carelessly can raise hopes they cannot meet, damage trust in other clinicians and, in some jurisdictions, breach professional or advertising rules. This article sets out principles for communicating root cause thinking honestly.
Principles
Contributing factors, not a single cause
Most chronic illness has several contributors. Explaining this from the start avoids the disappointment of a search for one hidden culprit and makes a multifaceted plan feel logical.
Possibility, not promise
Improvement is often possible; cure is rarely guaranteed. Language that expresses probability, such as “many people in similar situations improve”, is more honest than language that promises outcomes.
Realistic timelines
Lifestyle and nutritional change typically produces results over weeks to months. Setting expectations early prevents patients from abandoning plans that need time.
Evidence, labelled
Explaining which parts of a plan are well supported, which are promising and which are based on experience allows patients to make informed choices.
No blame
Explaining how circumstances, genetics, environment and life events have shaped a person’s health avoids implying that illness is their fault.
Complementing conventional care
Integrated practice depends on respect for the patient’s other clinicians. Criticising previous care undermines trust and can lead patients to abandon effective treatment.
Phrases to use and avoid
| Avoid | Prefer |
|---|---|
| “We’ll find the root cause.” | “We’ll look for the factors that are contributing, and work on the ones we can change.” |
| “This will cure your condition.” | “Many people with this condition feel better when these factors improve. Let’s see how you respond.” |
| “We can reverse your diabetes.” | “For some people, significant weight loss leads to remission, meaning normal blood sugar without medication. It needs ongoing monitoring.” |
| “Your doctor missed this.” | “This is something worth looking at together with your doctor.” |
| “You won’t need your medication.” | “As things improve, your doctor may be able to review your medication.” |
| “This test will show exactly what’s wrong.” | “This test answers one specific question.” |
| “Your gut is toxic.” | “Your digestion is clearly bothering you; let’s find out why.” |
| “This supplement heals the gut.” | “There is some early evidence for this in your situation; we’ll review whether it helps.” |
Common difficult conversations
“My doctor said nothing is wrong”
Patients who have been told that their tests are normal may feel dismissed. A helpful response acknowledges that their symptoms are real, explains that normal tests are reassuring about serious disease, and that there may still be factors contributing to how they feel that are worth addressing. This validates the patient without undermining their doctor.
“I want every test”
Patients sometimes request extensive testing. Explaining what each test can and cannot show, the risks of false positives and cost, and how tests will be chosen to answer specific questions, helps them make informed decisions.
“I read that this will fix everything”
Responding with curiosity about what the patient read, then sharing what the evidence shows, respects their initiative while correcting misinformation.
“Can I stop my medication?”
The answer should always involve the prescriber. Stopping some medicines abruptly, such as antidepressants, antiepileptics, steroids, antihypertensives and anticoagulants, can be dangerous.
Checking understanding
The teach back method, asking patients to explain the plan in their own words, is a simple way to check understanding. “So that I know I’ve explained it clearly, could you tell me what you’ll be doing over the next month?” This is framed as a check on the practitioner’s explanation, not a test of the patient.
Informed consent
Recommending tests, supplements or interventions requires that patients understand their purpose, evidence, costs, risks and alternatives. This is particularly important for interventions with limited evidence and for those the patient pays for directly.
Advertising and public claims
Many countries regulate health claims in advertising and marketing. Regulators and professional bodies have acted against practitioners who claim to cure serious diseases, make unsupported claims about tests or supplements, or use testimonials misleadingly. Websites, social media and patient materials should describe services accurately, avoid claims of cure and distinguish evidence from opinion. Practitioners should know the rules in their own jurisdiction and profession.
An illustrative conversation
A 45 year old woman with long standing fatigue says: “I’m so glad I found you. My doctor just said it was stress. I know you’ll find what’s really wrong.”
The practitioner responds: “I’m glad you’re here, and I can hear how frustrating this has been. I’ll be honest with you: fatigue usually has more than one cause, and sometimes stress really is part of it, alongside other things like sleep, iron levels, hormones and how busy life is. What I can do is look carefully at all of those with you, and work with your doctor on anything that needs testing or treatment. Many people feel noticeably better over a few months when we work on the factors we find. Does that sound like a reasonable place to start?”
The response validates her experience, sets realistic expectations, respects her doctor and offers genuine hope without promising a single answer.
Trust built on honesty
Root cause thinking is a powerful framework, and patients are right to value it. Communicated honestly, with realistic expectations, labelled evidence and respect for other clinicians, it builds lasting trust. Communicated as a promise, it risks disappointment and harm.
Communication questions
Should practitioners promise to find the root cause?
How should practitioners respond when a patient says their doctor found nothing?
What is the teach back method?
References
- Schillinger D, Piette J, Grumbach K, et al. Closing the loop: physician communication with diabetic patients who have low health literacy. Archives of Internal Medicine. 2003;163(1).
- Elwyn G, Durand MA, Song J, et al. A three talk model for shared decision making: multistage consultation process. BMJ. 2017;359:j4891.
- Riddle MC, Cefalu WT, Evans PH, et al. Consensus report: definition and interpretation of remission in type 2 diabetes. Diabetes Care. 2021;44(10).
- General Medical Council. Good medical practice. London: GMC; 2024.
Continue your learning
Communicating honestly with patients
Communicating clearly and honestly with patients is a core professional skill practised throughout IIFM’s 6 month Functional Medicine and Clinical Nutrition program, in live discussions of real cases.
This article is for the education of healthcare professionals. It is not a substitute for individual medical advice, diagnosis or treatment, and does not change any practitioner’s scope of practice. Regulation and guidelines differ between countries.