Dr. Johnston is a dietitian with a Masters in Nutrition and Dietetics and a PhD in Human Genetics and a wellness coach. He is a fellow of the Australasian Society of Lifestyle Medicine, a member of Dietitians Australia, and completed health coaching training with Well Start Health. He has been plant-based since 1991 due to the health, environmental, and ethical benefits. His private practice, Perfect Human Food Consulting, offers individual consultations, public speaking, webinars, workplace health programs, and residential reboot programs. He has expertise in the prevention, treatment, and reversal of chronic diseases through nutrition and lifestyle medicine. He enjoys empowering people across all life stages to attain optimal health. Peter is a partner with Melbourne Lifestyle Medicine which runs lifestyle medicine retreats, online programs, workplace health programs, webinars, and seminars. Peter enjoys speaking at international conferences and offers telemedicine in Australia.