“Will this actually work?”
It’s the question most people want to ask on a first call and often don’t, because they’ve been disappointed before. If you’ve spent two years cycling through specialists in San Antonio while being told your labs look fine, scepticism is a reasonable response, not a character flaw.
So here is a direct answer, with the caveats intact. Functional medicine has a reasonable evidence base for certain conditions and much thinner evidence for others. Improvement is common but not universal. Timelines are measured in months, not weeks. And any practice promising you a guaranteed result is telling you something no honest clinician can know.
At Modern Functional Medicine, Dr. Bronwen Martin, DC, IFMCP and Dr. Andy Martin, MD set expectations in the first appointment rather than the fourth.
What “Success” Actually Means in Root-Cause Care
Conventional care often defines success as symptom suppression: the rash cleared, the reflux stopped, the anxiety is manageable on medication. That’s a legitimate goal and sometimes exactly the right one.
Root-cause care aims at something different — reducing the driver so the symptom has less reason to recur. That’s a slower target, and it means the early weeks can feel less dramatic than a prescription that works overnight.
We define success against measurable markers agreed with you at the outset. Not “feeling better,” which is unfalsifiable, but specific things: a symptom frequency count, a lab value, a functional capacity you currently don’t have.
If you’d like to know what realistic targets would look like for your situation, that’s exactly what a free 15-minute consultation is for.
Realistic Timelines by Condition
These ranges reflect published literature and general clinical experience. Your own trajectory may sit outside them in either direction.
Digestive conditions (IBS, SIBO, dysbiosis). Often the fastest to respond. Initial symptom change — reduced bloating, more predictable bowel habits — commonly appears within 4 to 8 weeks. SIBO treatment courses typically run 2 to 6 weeks with reassessment afterward, and recurrence is well documented, so the work usually continues into maintenance for several months. The NIDDK has patient-facing background on IBS and its variable course. More detail on our gut health approach.
Thyroid and Hashimoto’s. Thyroid hormone optimisation can produce noticeable energy change within 6 to 12 weeks. Antibody reduction, where it occurs, is slower — often 6 to 12 months — and antibodies don’t always fall even when symptoms improve substantially. Both facts matter. See our thyroid disorder page.
Hormonal conditions (PCOS, perimenopause). Insulin sensitivity and cycle regularity in PCOS typically shift over 3 to 6 months. Vasomotor symptoms in perimenopause often respond faster, within 4 to 12 weeks.
Autoimmune conditions. The most variable category. Some patients see meaningful inflammatory marker change and symptom reduction within 3 to 6 months. Others plateau. Remission is a genuine outcome in the literature for several conditions; cure is not a claim we make. Background from the NIH NIAMS. See autoimmune care.
Brain fog and fatigue. Highly dependent on the underlying driver. Correcting a significant B12, iron, or vitamin D deficiency can produce change within weeks. Where the driver is chronic inflammation or post-viral, 3 to 6 months is more typical and some patients need longer.
Chronic skin conditions. Skin lags internal change. Reduced new lesion formation often precedes visible clearing by weeks. Expect 4 to 8 weeks for early signal and 3 to 6 months for substantial change.
What Measurable Progress Looks Like
Rather than asking how you feel, we track things that can be counted.
Laboratory markers. hs-CRP for systemic inflammation, HbA1c and fasting insulin for metabolic function, thyroid antibodies where relevant, ferritin and vitamin D for nutrient repletion, calprotectin for gut inflammation. These get retested at defined intervals, usually 3 and 6 months.
Validated symptom instruments. Standardised questionnaires for fatigue, gut symptoms, and mood give a repeatable number rather than a recollection.
Functional capacity. Can you work a full day without a mid-afternoon collapse? Sleep through the night? Exercise without a two-day payback? These are the outcomes patients actually care about.
Medication changes. Where appropriate and always in coordination with your prescriber, reduced medication need is a meaningful marker. We never advise stopping medication independently.
Who Does Well, and Who Doesn’t
Being honest about this is more useful than a testimonial page.
Patients who tend to do well have a clear identifiable driver — a nutrient deficiency, an untreated gut infection, an undiagnosed autoimmune process — and the capacity to make dietary and lifestyle changes consistently over months.
Progress is slower where there’s ongoing unavoidable exposure, significant untreated sleep disorder, high unmodifiable life stress, or a condition where structural damage has already occurred. Advanced tissue damage doesn’t reverse because the underlying driver has been addressed.
Some patients don’t improve. When that happens, the responsible action is to say so, reconsider the diagnosis, and refer onward — not to sell another six months of supplements. Our full process is on how we work.
Frequently Asked Questions
Q: How long is a typical functional medicine program?
A: Most patients work with us for 6 to 12 months, with appointments every 4 to 8 weeks initially and less frequently as things stabilise. That reflects biology rather than billing — nutrient repletion, gut healing, and inflammatory change take months. Some patients with a single clear driver resolve in less. Complex multi-system cases sometimes take longer. We’ll give you an estimated arc after your first full appointment, and revise it honestly if the picture changes.
Q: Can San Antonio patients get the same outcomes through telehealth as in-person care?
A: For the great majority of what we do, yes. Functional medicine relies heavily on detailed history-taking, laboratory data, and iterative plan adjustment — all of which translate well to video. San Antonio patients use local Quest or LabCorp draw sites, and specialty kits ship to your home. Where a physical examination or in-person procedure is genuinely required, we’ll tell you and coordinate with a local provider rather than work around it.
Q: Does functional medicine replace my current doctors?
A: No, and it shouldn’t. We work alongside your primary care physician and any specialists you see. Dr. Andy Martin, MD holds conventional medical credentials, which means we’re comfortable communicating with your existing care team and referring when something needs a rheumatologist, gastroenterologist, or endocrinologist. Root-cause care and conventional care aren’t competing systems.
Q: What happens if I don’t improve?
A: We reassess. That may mean revisiting the working hypothesis, running different testing, or concluding that the primary problem sits outside what functional medicine addresses well and referring you accordingly. We’d rather tell you at month four that we’re not the right fit than keep you enrolled indefinitely. That conversation is part of the service.
