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About Qfive Healthcare

Precision, compassion, and deep personalisation

We work with clients who have often spent years navigating the NHS or private medicine without resolution — people with complex, multi-system, or long-standing conditions where the root cause has remained elusive. If your tests come back "normal" but you know something is wrong, A.R.T. may be the assessment you have been looking for. We also work with those who are in good health and wish to stay that way — using A.R.T. to identify emerging imbalances and address them long before they become disease.

Our approach is grounded in Dr. Klinghardt's Autonomic Response Testing methodology — one of the most sophisticated biofeedback diagnostic systems available. Every session is wholly tailored to your unique physiology, history, and healing goals.

With clinics in Central London and Hertfordshire, Qfive Healthcare is a private practice dedicated to those who demand more from their healthcare — and who are ready to address the root causes of their chronic illness, not just manage its symptoms.

Deirdre Nazareth
Deirdre Nazareth
M(Ost)Med · DO · ND · MSc Pain · IFMCP
ART Practitioner · Director
Sarah Summers
Sarah Summers
MSc (Advanced Physiotherapy) · CSP · HCPC
ART Practitioner · Director
Our Method

Grounded in the most sophisticated biofeedback system available

Autonomic Response Testing (A.R.T.) is a sophisticated biofeedback-based assessment developed by Dr. Dietrich Klinghardt, MD PhD. It works by reading the autonomic nervous system — the part of your body that governs heart rate, immune response, digestion, detoxification and more — as a diagnostic instrument.

Rather than treating symptoms in isolation, A.R.T. seeks the underlying stressors that have caused your nervous system to enter a state of "blocked regulation" — the root condition behind most chronic illness.

"Most chronic illness has multiple drivers. A.R.T. tests for all seven systematically — uncovering combinations and interactions that no single lab test or specialist consultation could reveal alone."
Dr. Dietrich Klinghardt, MD PhD
Treatment Modalities

Protocols used at Qfive Healthcare

Based on A.R.T. findings, treatment is selected and verified against each individual's responses. Protocols may include any combination of the following:

Targeted Supplementation

Individually verified vitamins, minerals, enzymes and nutraceuticals — tested for suitability and correct dosage before recommendation.

Herbal Medicine

Antimicrobial, adaptogenic and detoxifying herbs — verified by A.R.T. to ensure they support rather than burden your system.

Detoxification Support

Heavy metal chelation, mould protocols, and drainage support — sequenced carefully so the body can safely eliminate identified toxins.

Psycho-Emotional Work

Applied Psycho-Neurobiology (APN) and trauma-informed techniques to address the emotional and subconscious drivers of physical illness.

Lifestyle & Dietary Guidance

Personalised nutritional strategies, EMF mitigation, sleep hygiene, and environmental changes — all verified to support your specific healing process.

Manual Therapy

We offer Douglas Heel's Be Activated technique — a powerful manual therapy that resets the body's neurological sequencing, releasing deeply held muscular and fascial patterns.

Meet us at our clinic

Initial consultations are available in person at our Central London and Hertfordshire clinics.

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Qfive Healthcare offers complementary health services. A.R.T. is not a substitute for conventional medical diagnosis or treatment. Please consult your GP or specialist regarding any medical conditions. We do not advise stopping any prescribed medication without consulting your doctor.