Our Research

At YorkTest we constantly review our procedures to ensure that we are delivering the highest standard of service, from our Laboratory to the Customer Care Team. We are passionate about maintaining our position at the forefront of the industry, and building upon over 35 years of excellence. A vital part of this has been our research work which has shaped and directed the way in which we conduct our food intolerance testing services, providing us with critical knowledge needed to help optimise our customer’s diet and well being. Our studies are available below and give insight into the work we do at YorkTest and what it could mean for you.

Mental Health

Mental Health White Paper

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A review of evidence linking diet and gut health to mental health symptoms, and the suggestion that an IgG-guided elimination diet could be a viable intervention strategy.

Weight Loss

Obesity and Weight Loss White Paper September 2017

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There are countless dietary programmes on the market, but none of them recognises the possibility that certain foods, even healthy ones like tomatoes or carrots, could be problematic if they trigger an immune system response in overweight individuals. Eliminating foods that are IgG-reactive, while replacing them with similar, non-reactive foods to ensure that nutrient deficiencies do not occur, is a relative new concept for a diet. This paper examines the viability of a food-specific IgG guided elimination diet as a weight loss strategy.

Weight Loss White Paper May 2016

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Survey of individuals who had taken a YorkTest food-specific IgG test programme, including the option of Nutritional Therapist support, and who had reported weight loss after making dietary changes according to the test results.

YorkTest Survey

University of York Study

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Survey of over 5000 people taking the YorkTest food intolerance programme; commissioned by Allergy UK and feedback analysed by the University of York.


IBS Clinical Trial

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A clinical trial, published  in the 2004 medical journal GUT, focused on diagnosed sufferers of Irritable Bowel Syndrome.

Migraine Research

Migraine Study 2005

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A prospective audit looked at migraine sufferers to determine whether eliminating the foods highlighted in the result of a YorkTest food-specific IgG antibody test could improve their condition.

Migraine Study 2011

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Research from the University of York further supported the finding of the 2005 Migraine Audit.

Migraine Survey 2011

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UK charity Migraine Action surveyed 1,000 migraine sufferers, revealing that over two thirds of members...