The Institute for Optimum Nutrition (ION) is the leading training provider of registered nutritional therapists in the UK and a not-for-profit educational charity. Founded in 1984 by nutrition expert Patrick Holford, with twice Nobel Laureate Dr Linus Pauling as patron, ION has been at the forefront of nutritional education for over 40 years.

Their success is anchored in their profession-led, evidence-informed approach and in their many graduates who have gone on to transform thousands of lives. Validated by the University of Portsmouth, ION’s professional courses combine academic rigour with practical application and exceptional student support. There are courses for those new to nutrition, those upgrading their qualifications or returning to practice, and healthcare professionals looking to integrate nutrition into their practice.

ION also offers free resources including newsletters, podcasts, and videos, providing insights, articles, and tips to inspire healthier choices and deepen understanding of nutrition’s impact on wellbeing.