Jessica Pieterse

Registered Clinical Dietitian

Jessica has a Bachelor of Dietetics (Honours) from the University of Pretoria and is the owner of Dish Up Dietitians. She has a special interest in women’s health, nutrigemonics (DNA testing), functional nutrition, weight loss, and gut disorders.

Jessica is passionate about showing people that healthy eating can be simple, tasty and easy. She strives to provide evidence-based nutritional advice that is individualised for every person.

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Jessica is registered with the HPCSA (Health Professions Council of South Africa) and is a DNAlysis accredited practitioner that is skilled in interpreting nutritional genetics. Jessica is CDE (Centre for Diabetes and Endocrinology) certified to assist with diabetic patients. Jessica has experience in corporate, private practice consulting and industry work. She has worked at the Discovery Exec Wellness Centre consulting with company’s CEOs and directors. She has written for Longevity magazine and part of the expert panel for Health24. Jessica served on the Association for Dietetics in South Africa (ADSA) Gauteng South Committee as chair and CPD portfolio manager for 4 years.

Jessica consults from the Edenvale Medicross and works at Linksfeild hospital as a locum dietitian, working in the ICU, medical and surgical wards.

Jessica is married with two children. She loves spending time with loved ones, trying new recipes, hiking and reading a good book.

Special Interests


Many women don’t realise that they can improve their irregular periods, painful cramps, tender breasts,
awful PMS, unusual hair growth, hair loss and more with diet and lifestyle. It is not normal to have these
areas out of sync as we have been told previously.
I am passionate about helping women improve their health by understanding how their hormones work.
Hormones are all linked. Assessing oestrogen, testosterone, cortisol, insulin and thyroid hormones
provides a detailed picture on how to fix the root cause of the problem.
Besides the mentioned above, I am enthusiastic about addressing endometriosis, polycystic ovarian
syndrome (PCOS), infertility, menopause, and reducing the risk female health cancers.
I use several tools to guide me such as genetic tests, blood tests and the DUTCH test.

functional nutrition

This is a unique approach to health care. Functional nutrition, also called integrative medicine, looks at
how cells work in your body. When you start at this cellular level, you improve health from the root. This
approach often provides patients with improved health and relief of symptoms they have not managed
yet with conventional medical treatment. I think of functional nutrition like finding out why you keep
getting cut on your hand so you can stop being cut. Compared to the traditional medicine approach that
keeps giving you plaster for your cuts.
Functional nutrition approach can be applied to all areas of health such as heart health, weight,
inflammation and more.
I have done several extra studies to become an expert in this field such as Functional Nutrigenomics and

gut health

A poor functioning gut is not just about the obviously conditions like constipation, diarrhoea or IBS. Your
gut is a massively integral part of your overall health. An unhealthy gut will affect how regularly you get
sick, your mental health, your weight and more.
I am passionate about helping you resolve your gut issues and by looking at holistic health and systems,
also improve other areas of your health you didn’t know were connected.

Associated with:

Visit me at

Edenvale Medicross
111 Andries Pretorius Rd
Edenvale, Johannesburg

Willow Worx Health Centre, 15 7th Avenue, Dunvegan, Edenvale, Johannesburg

Get in touch with me for more information and to book a consult

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