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Education in Metabolic Oncology Nutrition Therapy

250-Hour Oncology Nutrition Consulting (ONC) Certification Program
Fall Term 2024 Application/Registration Deadline: September 13, 2024. Classes start September 23, 2024


Since 2017, the Oncology Nutrition Institute (ONI) has been providing evidence-based educational certification and training programs in the field of modern, metabolic, innovative, integrative, and outcomes-based oncology nutrition therapy. We are a 100% online school teaching practitioners from around the globe about the medicinal potential of therapeutic diets (i.e. ketogenic, TRE, AIP, Low FODMAP, tube feeding), the safe use of nutrition alongside conventional treatments, nutrient-drug interactions, assessment tools (i.e. micronutrient testing), micronutrients, phytonutrients, lifestyle medicine, nutritional psychology, lifestyle medicine interventions and more.


Our students are qualified nutrition, health and medical professionals, and our alumni are now found in over twenty different countries world-wide. Alongside a founding advisory board, the school was created by internationally recognized and award-winning journalist and nutritionist, Jess Higgins Kelley, MNT, ONC. Jess’s book, The Metabolic Approach to Cancer: Integrating Deep Nutrition, the Ketogenic Diet, and Non-Toxic Bioindividualized Therapies, is one of over a dozen highly curated required reading books in the 250-Hour Oncology Nutrition Consulting (ONC) certification program. Our instructors are experienced and professional practitioners, and ONI is now recognized globally for providing the leading edge education programs in metabolic oncology nutrition therapy.

Our flagship 250-Hour Oncology Nutrition Consulting (ONC) certification program is an intensive training program designed for qualified nutrition, health, and medical practitioners.​ The program consists of four, 10-week courses and a final exam. Assessments are graded, and individual feedback provided by expert instructors. Each term there are optional live Q&As, in addition to weekly reading assignments, presentations to view, and assessments to complete.

We believe that holistic, therapeutic, metabolic nutrition should be part of the standard of care. The world needs more qualified practitioners to help support clients/patients improve quality and quantity of life using dietary therapies, nutrition interventions, and lifestyle modifications. This certification program will not only enhance your practice, it also encourages students to focus on their own health. Reducing future cancer risk starts with what we eat today. Join us.

4th Annual Open House recorded August 2023 about the upcoming academic year
Node the arrows of young garlic, beautiful background. Green garlic scape close up. Agricu


"The Oncology Nutrition Institute provides sensible, evidence-based approaches to nutritional patient care during the cancer journey. The educational experience was informative, interesting and engaging, looking at each cancer with separate protocols, highlighting the importance of ethical, safe advice. The material provided is current and peppered with exceptional guest lecturers, all of whom are world leaders in this field of therapy. I thoroughly enjoyed the assignments which cleverly built the basis of practice guidelines. A valuable course for practice."

Teresa Mitchell-Paterson, ND, PhDc

Surry Hills, Australia

"I absolutely LOVED the program. It has been a wonderful experience and provided so much information that I was needing to be a better practitioner for all of our patients." 

Kathryn Holly Mott RD, HHC

San Diego, California


The Metabolic Approach to Cancer Book
Co-written by ONI Founder Jess Higgins Kelley, MNT, ONC
Required reading for Course 1: Cancer, Nutrition, and the Biological Terrain

In May of 2022 we celebrated the five year birthday of The Metabolic Approach to Cancer book which is is required reading in the 250-Hour ONC Certification Program and was written by the the Founder of the Oncology Nutrition Institute. Since the book was first published on May 24, 2017 it has sold over 50,000 copies and is now translated into seven other languages. Thank you to everyone who has bought the book! 



If you haven't taken the quiz from the book we have created a free and useful assessment tool for practitioners to start sharing with clients/patients. Cancer is not bad luck, this book and quiz will teach you a novel way to look at the potential drivers behind a cancer process, and, most important, the metabolic oncology nutrition approaches to integrate in order to overcome it. 

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