AD Dietistas is a nutrition and dietetics consulting office specialized in DAO deficiency. The project was born in 2011, being the first worldwide center dedicated to treating patients with DAO deficiency. Therefore, we visit in Barcelona and we also offer an online visits service around the world. The visits can be requested in English, French, Spanish and Catalan. Since 2022 we are part of the International Institute of DAO deficiency.

The team is made up of registered dietitians and nutritionists and clinical psychologists. The most common disorders, associated with an excess of histamine for a DAO Deficiency, are: migraine; intestinal disorders such as irregularities or abdominal distension; skin disorders such as hives, pruritus (itching) or redness; allergy-like symptoms such as rhinitis; and muscle pain. 

We think prevention is the future, so this is what we do.

Adriana Duelo
Director of AD Dietistas

Symptoms and treatments

These are some of the symptoms related to histamine accumulation due to DAO deficiency that we treat in AD Dietistas with personalized low histamine diets.

Popular posts

Intestinal dysbiosis and DAO deficiency

It is suspected that an imbalance between histamine-producing and histamine-degrading bacteria in our large intestine would favor the accumulation of high levels of this amine, its subsequent absorption into plasma […]

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Low histamine diet

For a long time you have been waiting for an article that discusses foods, talking about each specific category of food, but we do not like listings, given that many […]

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Pregnancy, migraine and DAO enzyme

During pregnancy, the production of the DAO enzyme in the placenta increases, in order to create a metabolic barrier and to prevent the entrance of excessive histamine to the fetus. […]

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Migraine and Food: a close relationship

Some of you might wonder how can we link food to migraine. It is true that one is related to the neurological system whereas the other is related to the […]

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