Expand your learning and earn CPD hours from the comfort of your own home, in your own time. ION has begun hosting on-demand CPD webinars. Click here to see available courses. Read more
The undergraduate degree will prepare you to become a fully qualified, registered nutritional therapist and is one of our flagship training courses, validated by the University of Portsmouth and accredited by the professional body for nutritional therapy’s education commission. Read more
The Brain Bio Centre specialises in the 'optimum nutrition' approach to support mental health concerns such as depression, anxiety, learning and behavioural issues (in both children and adults), psychotic disorders, cognitive decline and various neurological conditions. Read more
Learn about the benefits of nutritional therapy - from the comfort of your home! Read more
Professor Linus Pauling, PhD, Nobel laureate
The Institute for Optimum Nutrition (ION) is a higher education institution founded in 1984 by Patrick Holford with the support of twice Nobel Prize winner Professor Linus Pauling. It is one of the most respected training bodies of its kind in Europe.
Our flagship Nutritional Therapy courses educate students to become registered Nutritional Therapists on accredited professional qualification programmes. We champion our graduates and the wider nutrition and healthcare industry with our professional CPD courses. Our nutrition clinic and magazine Optimum Nutrition support the public to make a positive impact on their lives with food.
A message from ION during Coronavirus Covid-19 crisis
ION courses are designed with flexibility in mind and provide outstanding support. There are courses for everyone: from people with no previous experience, to qualified nutritional therapists, to allied healthcare professionals ready to add personalised nutrition to their practice. As one of the most respected training bodies of its kind in Europe, find out about studying at ION.
Discover exciting opportunities to deepen your knowledge and support your professional development through a range of short nutrition courses, short health courses, practitioner CPD events and Food Demo Days.
Register for an open event, join us online for a webinar (our in person open events are currently on hold) or book a one-to-one appointment phone call.
Optimum Nutrition is published four times a year and brings you the latest news, research, updates, forthcoming events, healthy recipes and much more... Sign up today for free digital access.
Our fully qualified Nutritional Therapists work with people every day to improve health and wellbeing, whatever your issue, they will help you find out how to improve your health naturally and safely.
This is a recording of a live course. The course aims to synthesise and review the latest research and trends around IBS and dysbiosis; give practitioners confidence in applying these to cases and help practitioners interpret laboratory data. Read more
Learn about the benefits of nutritional therapy - from the comfort of your home! Our lecturers will explain our courses, answer your questions and more during this webinar. Read more
IBD (covering Crohn’s Disease and Colitis) and Diverticular Disease can cause considerable pain and distress for clients. This online short course aims to synthesise and review the latest research and trends and give practitioners confidence in applying these to cases. Read more
January is typically a time when many of us feel overdue for a life review, yet many New Year’s resolutions will be long forgotten by the time February arrives. Here's how to stick to your goals Read more
If you want to know how much sugar you are eating, always check the label. But sugar-related claims can be confusing. We look at why we should always check the small print Read more
ION alumni Daniel O'Shaughnessy tells us about his journey from addiction therapist to functional medicine practitioner, and the "light bulb" moment that inspired him to focus on health issues surrounding the LGBTQ+ community Read more