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About Us

Activ8Health, Integrative Health and PRECISION NUTRITION

Knowing your dietary, genetic, biochemical and gut microbiome weaknesses may make all the difference to you living a healthy and longer life without chronic disease.

Magnesium Big-4 Info

This website links individuals who want to take active steps towards wellness by teaming them up with a qualified Dietitian or Nutritionist to provide you with expert advice and professional reports that will enable you to make the necessary practical changes required but at a personalised level and not a one-size-fits-all approach. Affordable practitioner support packages allow you as little or as much time as you need to enable you to interact with the Dietitian of your choice.

Expert, detailed reports follow all testing
We have a strong belief that all medical care should have an optimal dietary and lifestyle foundation which includes exercise and we want to incorporate emerging scientific principles in integrative care to guide you through the testing process, to then sift through the data to find dietary modification targets which may include supplement interventions based on your genetic and biochemical findings, your clinical needs and all of this overseen by a qualified Dietitian.

Doctors please join our team

Exercise Physiologists (EPs) please join our team

Physiotherapists please join our team

> We see medical practitioners whether GPs or Specialists as an integral part of our approach to diet and lifestyle modification and acknowledge medications may be absolutely necessary in clinical care. Such medical treatment may necessitate dietary and exercise modifications. Our recommendations will take medications and medical care into consideration.

> It is hoped we can develop a database of doctors on this website who do see diet and exercise as vital and central to medical care in the quest to enhance an individual’s health and wellbeing. Interested Doctors, please join us.

Dr. Rodney Lopez

MBBS (USyd) GradCertNutriMed (RMIT)


  • Dr. Lopez has created this website
    over 6 years from a blank canvas.
  • It has been a passion to create a portal
    to provide cutting-edge, personalised,
    precision nutrition to patients

What is Precision Nutrition?

What is Precision Nutrition?


The Dietary Management Panel: The Activ8Health Team is Here to Support You

Dietary Management Panel


The 12+1 Dietary Approach used by Activ8Health

Find out about our 12+1 Dietary Approach


The Activ8Health Lead Dietetic Practitioners

All Activ8Health Dietitians are Precision (Targeted) Nutrition experts

Lead Practitioner for Activ8Health


Specialty Interests: GUT Problems, Post-Surgical GIT Nutrition, FODMAPs, Diabetes, Weight Management, Nutrition of the Elderly

Lisa has over ten years of experience in the health and fitness industry, with significant experience as a trusted health professional with a Bachelor degree in Nutrition and Dietetics, finishing with First Class Honours and receiving a place on the Deans Merit List for Academic Excellence – coming in the top 5 percent of all students studying science, medicine and health.

With broad interests in nutrition from weight management to food intolerance Lisa has embraced cutting-edge scientific concepts that are now emerging in dietetics such as the gut microbiome and nutrigenomics and sees a huge role in the emerging science of precision nutrition where dietary management can be applied to you directly and personally.

Lisa, like all individuals with bright and inquisitive minds, thinks outside the nutrition square. Let her guide you towards optimal health through personalised dietary management using investigative tools considered science fiction just a few years ago.

Lisa will be delighted to guide you through individualised dietary management issues thus helping you achieve personal health goals.


Specialty Interests: Eating Disorders, Nutrition of the Elderly

Olwen obtained her BSc in Dietetics and Postgraduate Diploma in Dietetics with Honours in South Africa. I have worked in South Africa, New Zealand and now in Sydney with a total of fourteen years experience.

I have had experience with weight loss, weight gain in Eating Disorder clients, Diabetes, Hypertension and High cholesterol. I am interested in Nutrigenomics, Nutrigenetics, FODMAPs, Food Allergies and Children’s Health.

I am a Stanford Master Trainer in Chronic Health which equips the clients with tools to help manage and control their chronic health problems in a holistic manner.


Specialty Interests: Food Sensitivities, Malnutrition, Diabetes Wellness, Ageing Well

Dr Stacey Fuller is a PhD qualified Accredited Practising Dietitian. Stacey completed her PhD in nutrition at the University of Wollongong, investigating the health benefits of different types of dietary fibres in 2019. Prior to this, she completed a Master of Science (Nutrition and Dietetics) in 2013, also at the University of Wollongong and a Bachelor of Science (Biological Science) with Honours at Western Sydney University in 2006. Stacey is passionate about nutrition, health and science and likes to take a sensible and no-nonsense approach to healthy eating. Stacey has worked in a variety of private practice roles, providing nutritional advice to clients to help with a wide range of nutritional concerns, including diabetes, heart disease and high cholesterol, food intolerances, malnutrition, weight concerns and general healthy eating for all life stages. Stacey enjoys science and in particular learning about the ways in which nutrition can impact on our health. Stacey is a member of the Dietitians Association of Australia (DAA).


Specialty Interests: Heart and Cardiovascular Diseases, Hyperlipidaemia

Rachel is an Accredited Practising Dietitian, with a Bachelor of Nutrition and Dietetics from the University of Wollongong. She has been working in the nutrition field for the past six years and has a strong interest in food and wellness. Rachel has extensive experience in providing nutritional consults to clients to aid in the nutritional management of a variety of medical conditions including diabetes, heart disease, inflammatory bowel disease, food intolerances, vitamin and mineral deficiencies and weight management. In addition to this, she has significant experience in the evaluation of menus in the aged care sector and boarding schools, as well as analysis of recipes to ensure their nutritional adequacy against The Australian Dietary Standards. Overall, Rachel is committed to helping clients build their knowledge and make healthier food choices in order to meet their recommended nutritional goals.


Specialty Interests: Pre and Postnatal Nutrition, IVF, Fertility Nutrition, PCOS and Insulin Resistance, Endocrine Disorders

Kim is an Accredited Practicing Dietitian, Functional Nutritionist & Health Coach. She is highly experienced in a broad range of clinical areas including endocrinology, weight management and women’s health. Kim is passionate about the role of nutrition in fertility and pregnancy, to improve outcomes and the health of future generations. Furthermore, she is passionate about postnatal health and family nutrition.


Laura is a Functional Nutritionist and Dietitian (APD/AN) with a passion for wholefood health. She is a firm believer in the power of food as medicine and strives to bring nutrition back to basics. Her approach is evidenced-based and individualised, guiding clients on their unique path of health and wellness. Laura has worked in a variety of settings, which include acute and rehabilitation hospitals, fitness, corporate health, community education and nutrition communications.. She is passionate about women’s health and wellbeing, pre/postnatal nutrition, digestive health and metabolic disease.


Specialty Interests: Sports Nutrition, Muscle Mass, Body Composition, Weight Management, Diabetes

Is an Accredited Practising Dietitian (APD) with a Doctor of Philosophy (PhD) and Bachelor of Nutrition & Dietetics (Honours) from the University of Wollongong. Cinthya’s PhD investigated the impact of food choice on diet quality during weight loss.

As an APD, Cinthya has provided nutrition consultancy services across a variety of settings, including private practice, corporate and community. She has worked with a diverse range of patients, and her areas of practice include providing nutrition interventions for general healthy eating, weight loss, chronic disease management and sports nutrition.  Cinthya also has experience in conducting group-based nutrition seminars and cooking demonstrations.

Cinthya is committed to providing education about how food choices and habits influence health, performance and wellbeing, to offer practical nutrition advice, and to help clients understand the complexities underlying nutrition science. As an avid foodie, Cinthya is also enthusiastic about integrating her culinary knowledge into the advice she provides her clients.

Cinthya is a committee member in the Dietitian’s Association of Australia (DAA) NSW Executive Development Committee, a provisional member of the Sports Dietitians of Australia (SDA) and a member of the Nutrition Society of Australia (NSA).  Cinthya also holds a Bachelor of Commerce (BCom), with over 10 years of professional experience in various Marketing roles.

Exercise is an important part of the mix Dr Cinthya Wibisono

Exercise can involve risk and injury but does this mean this should not be undertaken for health? The same can be said for any medical or surgical intervention and likewise for any dietary or lifestyle modality. The use of medical practitioners providing medical or surgical services or qualified dietary or exercise practitioners guiding any dietary or lifestyle intervention will mitigate any risk and this is our aim to provide professionally guided integrative care.

All practitioners work independently and autonomously

All practitioners work as independent, autonomous professionals and as such, this website will not be involved in practitioner-client interactions. Each practitioner is insured independently and you can check the qualifications and professional indemnity of any practitioner on this website. You can do this through:  Find practitioners

Activ8Health is simply a portal, channel or host to assist practitioners in providing products/services or tests to their clients

This website simply acts as a portal for information and as a means for clients and practitioners to interact with a view to supply and track practitioner-only products, services or tests requested by a client either through this website or as a result of face-to-face consultations with a practitioner who then uses this website to provide products – services – tests.

This website however, provides vital background information for clients to make informed decisions about the suitability of any product, service or test and to then use this information as the basis of educated communication with our practitioners to see if indeed these products, services or tests are necessary and if they are compatible in your clinical circumstance. The final arbiter of clinical suitability will be your doctor or specialist to ensure a safe approach to integrative care.

Each product, service or test will be approved by and overseen by the practitioners themselves and this is true for services provided directly by a practitioner, or through third parties such as distributors of products or providers of tests.

No product, service or test is provided by this website directly

This website is not involved in the manufacture of any products and does not provide any testing services. Products and tests are provided by reliable third party entities. Services such as Dietary Analysis and other services on this website are provided by highly qualified practitioners working independently but using this website as a tool for practitioner-client interaction and ordering of products/services/tests for their clients.

All queries about products, tests or services should be directed to either the distributor of those products or tests, the manufacturer of those products or the practitioners assisting you in the provision of those products, services and tests and not to this website.


Any complaint can be addressed to the administration of this website for consideration and action if needed. Send such correspondence to admin@a8h.com.au

An integrative approach

What is expected is that any and all advice provided on this website or by a practitioner servicing your needs is always discussed with your medical practitioner or specialist first to ensure that the information provided is compatible in your medical circumstance.

It is important to read the ‘Website Terms and Conditions’ carefully on registration and to have a quick look at a brief overview of the terms found on the menu.  Click Website Terms & Conditions

By ticking the box that you agree to the website’s terms and conditions, you proceed to use the facilities offered on this site subject to those terms and conditions.

NutriDesk Pty Ltd
ABN: 66 082 390 896

Registered Address
Goodwin Chivas
29-31 Solent Crescent
Baulkham Hills NSW 2153

Magnesium Forms and their benefits: The Activ8Health Big-4 Magnesium Capsules


Fig.1 Opposite:

This is an extremely important concept to understand. Why Magnesium is not used as a knee-jerk reaction to anyone with prediabetes or diabetes or for that matter hypertension which can be a part of the Metabolic Syndrome an Insulin Resistant (IR) state is a mystery.

What happens with low magnesium levels is that there is increased renal excretion and this renal excretion leads to lower and lower Magnesium levels and this in turn lowers intracellular Magnesium which is critical for insulin signalling making Insulin Resistance (IR) worse. An absolute vicious cycle if ever there was one. 

“Moreover, insulin receptor autophosphorylation is dependent
on intracellular Mg2+ concentrations, making Mg2+ a direct factor in the development of insulin resistance. Conversely, insulin is an important regulator of Mg2+ homeostasis. In the kidney, insulin activates the renal
Mg2+ channel transient receptor potential melastatin type 6 that determines the final urinary Mg2+ excretion11

Critical flaws in research such as this study which stated categorically that a 12 week trial showed that magnesium supplementation did not work259. This shows flawed thinking in nutrient research where nutrients are supposed to work like magic bullets i.e., instantaneously like drugs in an Accident & Emergency Dept. This is simply foolish. Dietary and nutrient management need far longer time-frames of 20 – 40 weeks to reach steady state260. As the authors of this study states, it is time for a reappraisal of the use of magnesium in so many states that are exacerbated by hypomagnesaemia but where flawed research has tainted the minds of practitioners. There are vast pools of magnesium intracellularly, in bone (60%) and intracellular spaces (40%) thus serum magnesium is a very unreliable marker of Magnesium status. These pools will avidly take up supplemented Magnesium so it will take time, a great deal of time to reach a steady state260.

A high Calcium intake and low Magnesium intake will make matters worse in terms of intracellular Mg 2+levels and high intracellular Ca2+ trigger NFkB and inflammatory changes77.


  1. Magnesium is critical for Insulin Signalling to work. Without Magnesium Insulin Resistance (IR) just worsens, diabetes and prediabetes will spiral out of control
  2. Without magnesium, ATP the currency of cellular energy won’t form as Magnesium is vital for ATPase to work
  3. Magnesium is involved in around 300 cellular reactions
  4. Insulin resistance due to Magnesium deficiency causes renal loss of magnesium, leading to more insulin resistance and hence more magnesium loss through the kidneys – a vicious cycle allowed to carry on in the medical care of those insulin resistant or diabetic. Something that should never happen.
  5. Alzheimer’s is thought to be insulin resistance of the brain – Type-3 Diabetes of the Brain
  6. Magnesium is critical for musculoskeletal health, nerve transmission and over 60% of the body’s Magnesium is found in bone so bone health depends on magnesium.
  7. Magnesium and Calcium need to be at a critical ratio otherwise intracellular Calcium can build up triggering off systemic inflammation. Magnesium helps lower CRP and E-Selectin a marker for Endothelial Function an early sign of vascular disease41
  8. E-Selectin is also INVERSELY related to low Magnesium levels 41. The lower the Magnesium level, the higher will be E-Selectin and a worsening of Endothelial Dysfunction as a corollary.
  9. Please take Magnesium with an early dinner at night not in the morning as it can relax you and cause sleepiness which is a good thing for many

The Activ8Health Big-4 Blend 

Magnesium Threonate (MgT) 
  • Researched at the Massachusetts Institute of Technology (MIT) with a Nobel Laureate as a part of the team
  • The Threonate component is a derivative of Vitamin-C
  • This form crosses the Blood Brain Barrier (BBB)
Magnesium Glycinate 
  • Shown to help with anxiety
  • Shown to be of benefit in many conditions including high blood pressure, stroke, heart rhythms, fibromyalgia, pain syndromes, all cause mortality, Type-2 Diabetes Mellitus 65.
Magnesium Orotate 
  • Magnesium Orotate is a chelate of Magnesium + Orotic Acid
  • It is interesting some people use this form for the benefits of Magnesium
  • Others take this chelate form of Magnesium for the Orotic acid used in sports for endurance and heart health
Magnesium Citrate 
  • A great all-round magnesium that helps build up Magnesium levels throughout the body
  • Helping to decrease arterial wall stiffness and lowering blood pressure 65.
A low Magnesium level leads to dangerous cellular events   

Low Magnesium levels have been stated as being a PUBLIC HEALTH CRISIS 45

Low Magnesium sets into motion this series of events that you will recognise as being some of the most common presentation in General Practice and medicine in general 44.

  1. Low Magnesium levels switch off Tyrosine Kinase needed to turn ‘on’ the Insulin receptor and insulin signalling
  2. When Insulin Signalling is disrupted, you have Insulin Resistance and when this happens, blood glucose levels increase causing widespread damage (Glycation)
  3. Insulin Resistance will cause Beta Cell Burnout eventually
  4. Low Magnesium creates a dysfunctional Na-Mg Exchanger protein 44 and this allows a disproportionate amount of Sodium (Na) and Calcium (Ca) to enter the cells
  5. High intracellular Sodium and Calcium lead to hypertension and inflammation setting the scene for cardiovascular disease and Coronary Artery Calcification (CAC)
  6. Magnesium is a natural antagonist for Calcium – a natural Calcium Channel Blocker. So low levels of Magnesium allows Calcium to predominate and if there is also low Vitamin-K1/K2 levels, then Calcium will enter soft tissues and cardiac valves. Why would there be a Low Vitamin-K1/K2 level? Well 99% of the Australian population does not get their recommended intakes of Veggies and Fruit!!!


  • Each capsule contains a total of 83.3 mg in total of all the magnesium components
  • It is suggested to take 4 – 6 capsules at night with food with an early dinner as a LOADING DOSE for 2 weeks
  • To then go on a maintenance dose of 3 capsules at night with an early dinner