“Optimum nutrition is the medicine of tomorrow.”

Linus Pauling, PhD, Nobel laureate

The Institute for Optimum Nutrition (ION) was founded in 1984 by Patrick Holford with the support of twice Nobel Prize winner Dr Linus Pauling
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ION is a higher education institution. Established for thirty-five years ION is one of the most respected training bodies of its kind in Europe.

Our flagship Nutritional Therapy diploma 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, food education days and magazine Optimum Nutrition support the public to make a positive impact on their lives with food.

Nutritional Therapy Diploma Course

For over 30 years the Nutritional Therapy Diploma Course has combined the latest theoretical knowledge from the science of nutrition with “real-world” clinical training to help you build an in-depth understanding of the role that nutrition plays in relation to human health and wellbeing.

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Short courses / CPD

Discover exciting opportunities to deepen your knowledge and support your professional development through a range of Practitioner CPD events and Food Demo Days.

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Open events

If you want to find out more about the courses you should register for an open event, you can either attend our Richmond site or join us online for a webinar.

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Optimum Nutrition magazine

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.

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Optimum Nutrition Clinic

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.

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Events

Latest articles and recipes

  • Opting for a plant-based diet

    Thinking of taking the Veganuary pledge? Find out what nutrients you should be thinking of and how to get them Read more

  • Can't eat, won't eat

    For those of us who enjoy a varied diet, selective eating is something that can cause confusion and frustration. But for those who suffer with it, it can create a range of problems with little or no help in sight. Read more

  • Easy Cheesy Sourdough Bread

    To get ready for Sourdough September, we present Vanessa Kimbell’s step-by-step guide to making a sourdough loaf. Whilst it may seem daunting it isn’t complicated – and the results should be worth it! Read more