Food intolerances are a source of controversy in academic circles because of the difficulty in understanding the pathogenic mechanism.


What is the difference between food allergy and food intolerance?

The essential difference resides in the activation of two completely different types of antibodies. When we come into contact with a food to which we are allergic, we activate a type of antibodies called IgE, characterized by a rapid activation and acute symptoms such as diarrhoea, stomach cramps, eczematous reactions and anaphylactic shock.

In case of food intolerance, the organism activates antibodies called IgG, which is manifested by mild and nonspecific symptoms, but mostly not acute.


What are the symptoms of food intolerance?

The symptoms of food intolerance are often completely non-specific, and are far from clear, as they are usually related to the gastrointestinal tract. In particular, you may have:

– Headache

– Asthma

– Irritability

– Recurrent infections

– Rhinitis

– Abdominal Bloating

– Diarrhoea/Constipation

– Insomnia

– Depression

– Sleepiness and difficulty concentrating

– Dizziness


How do I perform the test?

Using a drop of blood from the finger and a kit based on enzyme immunoassay, the ELISA system. After about 40 minutes, we will have the results, and the patient will be instructed on how to proceed and what foods you should avoid.


If the blood test turns out to be positive, can I no longer eat that particular food?

No, food intolerances are temporary by definition. There will be an elimination period of about three months (depending on the type of intolerance), followed by a period of slow and gradual re-introduction.

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