About me

Petra Klein

Bachelor of Medical Science UTS 2014
Masters Nutrition and Dietetics University of Sydney 2020

Welcome! As an Accredited Practising Dietitian located in Sydney NSW Australia, I love using the science to help people feel better. I place a priority on understanding the physiological mechanisms that underpin health, and how food and nutrients can help the body establish equilibrium.

I use a variety of dietary models along with a functional medicine / nutrient density approach to assist people improve conditions such as:

Mental Health / neurological – ADHD, Anxiety, Bi-Polar, Depression, Schizophrenia, Akathisia, Dementia, Alzheimer’s

Endocrine – Diabetes, Thyroid conditions, Fibrocystic Breast Disease, PCOS, Benign Prostatic Hyperplasia, Low Testosterone

Cardiovascular – Atherosclerosis / Coronary Artery Disease, Cardiac Arrythmia,  Peripheral Vascular Disease, High Triglycerides and Cholesterol.

Digestion – Reflux / GORD, Bloating, Constipation, Diarrhea, Food Intolerances and Sensitivities, Crohn’s, Irritable Bowel Syndrome (IBS), Diverticulitis.

Skin conditions: Psoriasis, Eczema, Rosacea, Cracked and Dry Skin

Mobility: Osteoporosis, Osteoarthritis, Peripheral Neuropathy, Bone and Ligament damage / Connective Tissue Disorders

Here are the dietary models I prefer to use:

  1. Ketogenic and Low Carb Healthy Fat diets to assist people with Type 2 Diabetes, weight loss, immune disorders, inflammation, childhood epilepsy, mental health disorders and digestive complaints.  
  2. Carnivore diet for complicated food sensitivities – with reintroduction strategies such as Low FODMAP, RPAH Food Sensitivity diet.
  3. Methionine restriction as an adjunct to cancer therapy.  Works best in early diagnosis.
  4. Foods and nutrients in applying approaches in nutritional immunology, and the triage theory of nutrition (Dr Bruce Ames). 

Please see the services page for more information.

My training and experience in motivational interviewing and non-violent communication, allows me to provide patients with empathy, support, and empowerment so they can confidently take the necessary steps to improve their health and wellbeing outcomes. 


Prior to qualifying as a Dietitian, I had a 15-year professional career in Disability and Mental Health as a Manager, Case Worker and Support Worker. Many of the people I cared for had complex health care needs. I am adept in translating technical health information into simple, practical, and easy to follow care plans for everyday people to follow.

Scroll to Top