Food intolerance testing kits? Are they worth the money?

Do you feel your something in your diet is to blame for unwanted gut symptoms such as abdominal pain, bloating or excessive gas? Are your symptoms so troublesome you are now tempted to pay for an intolerance test which will test over 900+ food intolerances with results emailed to you fast? 100% satisfaction guaranteed.... Such companies have grade A marketing teams but are these tests reliable and does the science back up their claims?

Before we learn about the different tests available lets first understand the difference between a food allergy and food intolerance. The key difference is a food allergy involves the immune system, which is the body’s natural defence against foreign bodies. There are specific tests to identify food allergies such as skin prick tests and symptoms include wheezing, skin rash, vomiting; and small amounts of a food can cause symptoms which for some people can be life threatening. Food intolerances do not involve the immune system and symptoms typically occur in the digestive tract. Common symptoms include gastrointestinal symptoms such as bloating, excessive wind, diarrhoea, stomach cramps. Symptoms can gradually appear; often after consumption of a food. So what tests are there out there and what are they actually measuring?

IgG testing

IgG is a protein in the blood that functions as an antibody and the production of IgG is a normal response to eating food. IgG food testing kits look for the presence of IgG antibodies to specific food groups in the blood and if found; these tests indicate you are intolerant to these foods and you are advised to remove these foods from your diet.

IgG antibodies are produced by many healthy adults and kids who do not have any symptoms and

Current advice does not support the use of these tests to diagnose food intolerances

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Applied Kinesiology

Applied kinesiology reports that certain foods cause an energy imbalance in the body which affects muscle activity. The therapist would test how muscles respond when holding the challenge food in a glass vial.

Studies show that this test is no better than chance and is not recommended.


Hair analysis

Hair analysis testing works on the theory that harmful foods, foods that a person is intolerant to will show up in the hair’s mineral composition.

There is NO evidence that hair analysis is a way of diagnosing a food intolerance.


VEGA testing

The method generally involves measuring the body’s electrical resistance at acupuncture points. It is claimed that possible allergens or toxins will affect the electromagnetic conductivity

Studies show that this test is no better than chance and is not recommended

The science that reportedly underpins these tests is not evidence based and can often do more harm than good. These tests often advise removal of whole food groups e.g. dairy or wheat and such restricted diets are not balanced and can lead to nutritional deficiencies. Regularly clients tell me they have been advised to remove dairy to manage their gut symptoms; however it is likely the sugar component i.e lactose that is the culprit and not the dairy protein.  Consequently people might be excluding all dairy foods including cheese, yogurt and milk unnecessarily,  compromising their calcium and long term bone health.

To identify a food intolerance a dietitian will work with you to eliminate the foods containing a specific nutrient, observe for symptoms and rechallenge at a later date and you can be reassured all advice discussed is evidence based!

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If you feel exasperated with your symptoms, feel they are influencing your quality of life and feel unsure what you can and cannot eat please get in touch so you can start your journey to a symptom-free life.


Call Victoria on 07881805770 or email for more information

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