My story
Bedside to Bench, Bench to Bedside — How My Practice Found Fertility
Agnes Ryu, OMD, MATCM
The foundation
For over thirty years I have worked where laboratory science and classical clinical practice meet. I did not inherit a fixed method — I built one, and I am still building it. What has stayed constant is a single instinct: to understand how a treatment actually works before I trust it, and to treat the system rather than the symptom. That instinct has carried me from a hospital stroke unit to a research bench and back to the consulting room, and it is the reason my practice at Dr Ryu Natural Medicine looks the way it does today.
Early influences in neurology
My clinical thinking was formed in stroke medicine. Working with neurological patients in urgent care and rehabilitation, I learned to read the body in two directions at once. A stroke is an injury at the centre — the brain — but it announces itself at the periphery, in a hand that will not open or speech that will not come. Recovery runs the other way: precise, repeated input at the periphery can prompt the nervous system to reorganise at the centre. Watching plasticity do its work under carefully chosen intervention taught me that the body is one connected, adaptable system — and that the site of a symptom is rarely the whole story of its cause or its cure.
The post was not an observational one. I worked in acute care and in rehabilitation, and I read the laboratory panels and the imaging myself rather than receiving them already interpreted. Reading your own data changes what you notice: you stop seeing a result and start seeing a trajectory.
What early practice kept showing me
In my early practice I concentrated on structural and neurological rehabilitation — reducing mechanical stress, supporting circulation, encouraging neural recovery. What I kept noticing, working that way, was that the change did not stay local. I am not making a claim here about what any one treatment does; I am describing what sent me looking. An effect that appears somewhere other than where you intervened has to travel through something, and finding out what has occupied me ever since.
What the stroke unit taught me about energy
The stroke unit taught me something else, and it took me years to say it plainly. The vascular damage that brought those patients in had not appeared from nowhere. Behind it, again and again, sat the same upstream picture — disordered glucose and lipid handling, high blood pressure, inflammation, a body no longer meeting its own energy demand. Different names on the chart; one common denominator underneath.
Recovery said the same thing from the other direction. Two patients with comparable lesions did not recover comparably. Age, collateral circulation, comorbidity and the sheer intensity of rehabilitation account for part of that spread — they did not, as far as I could see, account for all of it. What I kept coming back to was capacity: how well the tissue could actually produce and sustain energy while doing the expensive work of repair and reorganisation. Rehabilitation is metabolically costly. Where that capacity was there, the work held. Where it was not, progress was slow and gains slipped away between sessions. That is an inference drawn at the bedside, not a finding I can put a trial number against, and I have held it as a working hypothesis ever since.
I went on noticing it after I left the hospital. In persistent pain, in inflammation that would not settle, in patients whose recovery stalled for no structural reason — the same variable kept determining the outcome. Not the diagnosis. The energetic state of the person carrying it.
So that is where the work moved. I began treating energy metabolism itself as the object of care — how the body produces and regulates energy — regardless of which surface symptom had brought the person through the door. The metabolic diagnoses that eventually get written on a chart are, in my reading, the late and visible end of a process that starts a long way upstream of them.
The principle this left me with
Most of what people try to fix is downstream. A few upstream inputs control the rest.
A change of direction
My clinic in South West London gradually filled with women in difficult endocrine transitions and early endocrine insufficiency — presenting with thyroid dysfunction, metabolic disturbance, weight change, poor sleep, and unrelenting anxiety. I worked the way my research training had taught me to: looking beneath the presentation to the metabolic and endocrine terrain producing it.
The question I could not answer
As that terrain improved, patients started asking me a question I had not been trained to expect: what did any of this mean for their fertility? I did not have a good answer. So I went and looked for one — what is it about metabolic and endocrine regulation that could plausibly matter for reproduction, and by what mechanism? That enquiry is what reframed fertility for me: not an isolated problem, but an expression of the systems beneath it.
A considered focus
That reframing gave my practice its direction. Over close to two decades, fertility has become its centre — not through a single decision, but by following the evidence of what I was seeing. I have spent those years refining how I read a patient’s biochemistry, how I test, and how I intervene — for couples trying to conceive naturally, and for those going through assisted reproduction who want their own biology supported alongside the clinical process.
The work now
I treat fertility as a system consequence: the output of energy production, insulin regulation, thyroid function, and inflammation, read together. Everything I trained in separately — stroke care, metabolic medicine, biochemistry, natural-compound pharmacology, structural medicine — now serves one question about the person in front of me: why is this system not unfolding its innate programme — what is draining the reserve, and what is holding it below threshold? That is the whole of my method, and it is enough to occupy a career.
If you have been trying to conceive and sense that the standard picture is missing something beneath the surface, that terrain is exactly what I look at first. I see patients at Dr Ryu Natural Medicine in Wimbledon, South West London.