“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 over thirty 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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Practitioner CPD events

Develop your skills, knowledge and career with our bespoke practitioner CPD events.

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Food demo days

Develop knowledge, grow understanding and build skills with our informative ION Food Events.

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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...

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Optimum Nutrition Clinic

If you are feeling unwell (or simply want to improve your sense of wellbeing) and have an interest in finding out what you can do to support your health naturally, we’d recommend working one-to-one with one of our nutritional therapists in our Optimum Nutrition Clinic.

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Events

Latest articles and recipes

  • Dirt pudding

    Christine Bailey shows us how to make a vegan chocolate dessert for this year's Halloween celebrations. Read more

  • Five Minutes with Lucinda Miller

    We chat to Lucinda Miller, a naturopath and functional medicine practitioner specialising in children’s health and wellbeing. Lucinda recently published her first book, The Good Stuff. Read more

  • Children’s TV and internet habits linked to junk food intake

    Children who watch commercial television or use the internet for more than half an hour per day are more likely to pester for, buy, and consume junk food products that are high in sugar, salt and fat, according to a report by Cancer Research UK and the University of Liverpool. Read more