Functional Medical Clinic

We’re about a healthy lifespan through optimizing cognitive, physical and emotional performance
— Dr Cindy de Villiers
Reset health by going through the layers including hormonal, digestive down to cellular and mitochondrial health
— Dr Cindy de Villiers

Am I in the Right Place?

Some choose to eat and do what they feel like, medicating as required to keep the ticker ticking and so on.

A perspective available to others is that there’s more fun to be had through optimizing personal health and performance using Nutritional & Lifestyle choices and by managing Environmental Toxins etc.

But what happens when despite doing everything to be on top of the game, energy and well-being start to decline, or progress is underwhelming?

SleepPerformance is an online service designed to provide convenient individualized functional advice to help reduce the confusion of experimenting with Lifestyle and Nutrition changes by trial and error.

For more intractable issues, read on for information on a Full Functional Medical Workup with Cindy at the clinic.

Functional Medicine treats the body as a whole, rather than a collection of unrelated parts, encompassing the following perspectives:

  • Biochemical & BioPhysical: Addressing imbalances & deficiencies

  • Biomechanical: From physical imbalances through to surgical options

  • Neuro-emotional: From unconscious programming through to electron/ion communication of neurons

Example of how it works

A client presents with sleep or energy issues, wanting more capacity:

  • Clinical presentation and investigation (e.g. blood tests) might throw up hormonal or metabolic problems e.g. thyroid, dopamine, insulin, estrogen or testosterone imbalances.

  • It’s then necessary to deduce whether a deficiency or imbalance is due to a hormone not being produced, whether it’s not being used effectively, or whether it is not being metabolized optimally.

  • As well as blood tests, the combination of an OAT, DUTCH and Gene test might help to clarify.

    • From the blood tests, it may be possible to deduce whether an iodine insufficiency is contributing to thyroid problems.

    • Estrogen dominance (e.g. man boobs or period pain) may be partially due to genetic SNPs and/or a lifestyle factor such as alcohol consumption, both of which decrease the breakdown of estrogen.

  • The influences of thought processes and unconscious programming may contribute

Treatment options may include:

  • Lifestyle/nutrition changes e.g. Intermittent Fasting and a LCHF diet

  • Being aware of how nutrition interacts with genetic variation

  • Supplements and/or prescriptions

  • Referral for neuro-emotional or energetic work

  • Bio-mechanical referrals including bodywork or surgery

Points of Difference

  • Focus on addressing bio-chemical & neurological imbalances towards building resilience

  • Widely experienced across all conventional and complementary modalities

  • Independent and without a reductionist agenda

  • The ability to connect the dots and recognize patterns arising from 29 years of medical diagnostic experience across 3 continents

  • Assessment of specific genetic SNPs alongside relevant laboratory/nutritional and blood testing

  • Individually applying the latest medical research and capabilities, from nutrition, to pharmaceuticals & surgery, through to exploring bio-hacking

  • Prescribing options include compounding pharmacies in New Zealand and Australia

  • Realistic time and resource allocation to safely collaborate around which combinations of treatment modalities to pursue

Will the clinic be a good fit for me?

The clinic is likely a good fit for non-pregnant adults aged 16+ looking to live longer, be healthier and optimize performance - particularly those wanting to take investigation and intervention to another level.

Clients will be:

  • Wanting to address imbalances or diagnosed conditions undermining optimal cognitive, physical and emotional health

  • Wanting to work collaboratively with independent medical advice

  • Enthusiastic and purposeful about the desired outcomes

  • Wanting to explore increasing performance (ethically and without impairing health)

  • Self-motivated to make agreed changes to lifestyle & nutrition (e.g. whole foods, low carb and fasting)

  • Familiar with using an online Patient Portal for routine interactions including payment by credit card (or able to get family support to assist)

  • Wanting a clinical relationship to monitor health changes and take advantage of the latest medical research


The General Fee Schedule applies as a currently registered client i.e. when a client has been seen by Cindy at consult in the last 2 years:

  • Consultation 60 minutes: $300.00 (give yourself an hour unless for a routine matter; you’ll only pay for what you use and rushing serves nobody)

  • Consultation 30 minutes: $150.00

  • Online Medical Inquiry through Online Portal Secure Message: $30.00 / message or per 10 minutes

  • Repeat Prescriptions: $15.00

  • Nurse Consult/Injection: $15.00 per 15 minutes

What is the cost of prescriptions from Cindy?

Subsidized medications will cost a maximum of $15 per item from a pharmacy, rather than a maximum of $5 per item through funded GP services.

What Cindy prescribes would generally not be prescribed by a funded service e.g.

  • Non-subsidized medication

  • Medication prescribed for non-endorsed conditions

  • Compounded medications

The body is an amazing thing. We enjoy working with clients towards agreed goals and having some fun together doing it.
— Dr Cindy de Villiers

Chronic conditions respond well to Functional Medicine

The reasoning is that what is experienced as chronic illness may have to do with the ecology of the cell and the cell's response to perceived danger, whether from infections, toxins or psychological distress. 
This unified theory of chronic disease lends itself to the treatment of many chronic conditions by modifying the cell ecology, the potential dangers and the resultant mitochondrial dysfunction (e.g. excess or insufficient inflammation).

Chronic Conditions which can undermine performance:

  • Thyroid Disease

  • Autoimmune Conditions

  • Depression

  • Hormonal Issues

  • Digestive Disorders 

  • Allergies

  • Asthma 

  • Menopause symptoms

  • Headache and Migraine

  • Fatigue – Chronic Fatigue Syndrome; Slow metabolism

  • Heart Disease

  • Neurological Disorders

  • Diabetes

  • Arthritis

  • Memory and Concentration loss

  • Accelerated Ageing

  • Obesity/Weight gain (more a symptom than a cause)

What do you get with seeing Cindy?

Health Function is a full-time specialized functional medical service with the experience, staff, platform and motivation to manage health complexity for optimal outcomes.

  • Functional Medicine Guidance for self-empowerment

  • Advanced use of Medication, Supplements, Testing & Specialists (local and international)

  • Specialized expertise treating chronic conditions

  • Expertise in enhancing brain function and physical capacity (responsible Biohacking)

  • Embraces both conventional & complementary therapies

  • Registered with the Medical Councils in NZ and Australia i.e. MCNZ and AHPRA (and previously registered in South Africa)

  • Functional & Integrative post-graduate qualifications, fellowships, memberships e.g. ACNEMAIMAA5MBioBalance

  • Continuing investment in training in NZ and internationally for the latest medical research and techniques including and beyond CPD requirements

  • 11 years of formal medical training and 29 years of registered medical practice in NZ, Australia & South Africa

  • To be registered, Cindy may not make false or misleading claims (as defined and governed by the respective Medical Councils)

  • The clinic meets privacy and quality commitments using professional medical systems


The Health Function Team

Health Function arose from the collective personal experiences of the owner-operators while exploring opportunities to increase cognitive & physical capacity.  Collectively bringing a century of front-line medical and business experience to the party, we decided in 2014 to "crack the code" for running a private functional medical clinic that works for client and clinician.

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Dr Cindy de Villiers

I am an experienced General Practitioner (Family Medicine Physician) having graduated from Stellenbosch University, South Africa in 1990. 

I have been involved in acute care and family medicine for the past thirty years. While assisting a client some twenty years ago with Heavy Metal Toxicity, I became aware of the relevance and impact of Functional Medicine.  More recently I have developed an interest in personal performance and its application to clients with chronic conditions.  I have since turned my full attention to combining the Functional Medicine and Bio-Hacking modalities to amplify what I am able to achieve with motivated clients.

  • Bachelor of Medicine and Bachelor of Surgery (M.B.,Ch.B.)

  • Fellowship of the Royal New Zealand College of General Practitioners (FRNZCGP)

  • Fellowship of the Royal Australian College of General Practitioners (FRACGP)

  • Fellowship Australasian College of Nutritional & Environmental Medicine (FACNEM)

  • Bio-Balance Trained (Dr Bill Walsh)

  • Australasian Integrative Medicine Association: AIMA

  • Australasian College of Nutritional and Environmental Medicine: ACNEM

  • The Australasian Academy of Anti-Ageing Medicine: A5M

  • ph360 endorsed coach

  • 11 years of formal medical training and 29 years of registered medical practice in NZ, Australia & South Africa

Rose Middleton

I love working with people and supporting them in rediscovering how their bodies can come back to movement and wellness that is meaningful in their daily lives.

I’ve worked in health for nearly 40 years in New Zealand and overseas including experience in surgery and general practice through to injury management and rehabilitation. Personally, my challenges have been IBS and hormonal issues and the CAM approach has been the only thing that's provided me long term and sustainable change.

Over all these years of working with and observing myself and others and our bodies, I know that we all have the ability to change our health direction and to live well. 

I am stronger and more resilient and aging doesn't mean decline.

Neil Middleton

I first used functional medicine to optimize physical and cognitive performance while operating at a high level of demand growing an aviation industry SAAS company. It turned out the PHO funded guidelines and I had different objectives and I needed to take responsibility for the outcomes important to me.  My experience with functional medicine and the resulting performance improvements led me to Health Function.