New to nutritional therapy? Find out how personalised nutrition could benefit you Read more
Retrain for a flexible and rewarding career in nutritional therapy. Discover our courses. Read more
Gains skills to grow your business whilst gaining additional credibility from a degree. Discover the top up course for nutritional therapists. Read more
Discover ION’s unique, fully online Graduate Diploma in Integrative Functional Nutrition. Designed for allied health and medical professionals and CAM practitioners. 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.
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
This is a recording of a live course. The course aims to synthesise and review the latest research and trends and give practitioners confidence in applying these to cases. Read more
This is a recording of a live course. It will help practitioners develop personalised nutrition plans for their clients living with and beyond cancer based on available evidence. Read more
The GP, broadcaster and author chats to us about irritable bowel syndrome (IBS) in light of her new documentary How to Stop Your IBS on Channel 5 Read more
With a government review finding around 10% of drugs dispensed in England may be pointless and potentially harmful, could a lack of information fuel unnecessary prescribing for menopausal women? Read more
"Passionate foodie" Diana Warrings, DipION, explains how a food blog she started during her nutritional therapy studies led to a full time career in recipe development Read more