Food Intolerance and the Importance of Testing

Food Intolerance and the Importance of Testing



One of the questions people ask is why do we suggest food intolerance testing at The Lucy Rose Clinic?

Well, there’s strong evidence to suggest that not addressing your food intolerances can have an impact on your body’s weight. This article points us towards some of the facts, explains why and what we can do about it.


Food intolerances occur when the body is unable to digest a food or a component of that food properly. Intolerance to certain foods can cause us to have symptoms similar to food allergy which may include stomach cramps, nausea, irritability or diarrhoea. Sometimes though the reaction goes unnoticed, and sometimes symptoms can even be delayed by 72 hours after eating, making a low grade food intolerance not always easy to detect.



Whilst those with a true allergy need to eliminate the food completely, those with an intolerance may be able to tolerate small amounts of that food or the food component. Gluten, nuts, eggs and dairy are often cited as common offenders. But don’t be fooled! Many a health food can cause intolerances such as seafood, zucchini and even the type of wine you are drinking. It’s important to know which affect you personally when making healthy choices.


Gluten is a sticky protein found in many grains. In an article in The New England Journal of Medicine 55 “diseases” were listed as relating to eating gluten. Included were osteoporosis, irritable bowel disease, inflammatory bowel disease, anaemia, fatigue, rheumatoid arthritis, lupus and almost all other autoimmune diseases.


When we react to foods we’re intolerant to inflammation develops. British doctor, Dr John Mansfield, a pioneer in the field of allergy and nutrition says food sensitivities are ‘by far the commonest single cause of weight gain,’ when comparing to too many calories or a lack of exercise.  He goes further by stating:

One of the most successful weight loss secrets is to find out if you are sensitive to any ordinary, everyday foods such as wheat, corn, eggs, yeast or milk



So how does this work? digestion


As the gut becomes more inflamed from the food or food component ingested, the body reacts by becoming more reactive to further foods and so a downward spiral starts. The gut remains in a constant state of inflammation. As a result of the inflammation holes can slowly appear in the gut lining. Reading about bloating and weight around the middle here.

Eventually partially digested food particles are able to leak into your bloodstream exposing them to your body’s immune system. Your immune system reacts to the partially digested food particles which in turn encourages further inflammation throughout the body.

The body moves into a state of insulin resistance, creating higher levels of insulin. One of the actions of insulin is to encourage fat storage. So the result is weight gain, particularly around the middle. Blood sugar, inflammation, fat burning and autoimmunity are all linked to the hormone leptin.

colouful foods



It’s important to remember, as London-based allergy expert Dr Jonathan Brostoff reminds us, approximately 50 per cent of people with a food intolerance often crave foods that their bodies react to. This can be a tell-tale sign.


The results of food intolerance testing allows us to determine which foods our body reacts to most severely and gives us the opportunity to eliminate these offenders from our diet for a period of time, allowing our body to rest, reduce inflammation and heal. Weight loss is often a welcome by product of this. Other severe conditions such as autoimmunity, eczema in children & adults, sleeping, mood and memory also improve.


Without testing and being aware, we allow the harm in our body to be consistently repeated, maybe eating the offending foods several times each day. In doing so we’re creating an environment ideal for weight gain and chronic disease.

Ensure when you undertake any comprehensive testing regime to include food intolerance testing in your plan in order to get the full picture and the best results.



Food Intolerance and the Importance of Testing

Food Intolerance and the Importance of Testing

At The Lucy Rose Clinic, we recommend specific Thyroid screening, functional testing, dietary and lifestyle advice. If you need more support for your health please call 1300 THYROID and make a booking, or download the free ebook from our website.

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  1. Farrell, RJ, and CP Kelly. 2002. Celiac sprue, New England Journal of Medicine 346 (3): 180-88 Review
  2. Mansfield J, Six Secrets of Successful Weight Loss, 2012
  3. Institute of Optimum Nutrition
  4. European Food Information Council