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

High histamine Foods

(An article written in November 2011 and updated in February 2024) The deficiency in the enzymatic activity of Diamine Oxidase (DAO) can cause different symptoms in our body which manifest […]

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Merry low-histamine Christmas!

Toast your Christmas recipes with a touch of originality to enjoy low-histamine options. When December arrives, one of the most frequently asked questions is how to manage the Christmas holidays […]

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AD Dietistas and the International Institute of DAO deficiency

AD Dietistas is part of the International Institute of DAO deficiency, a healthcare company connecting patients with specialists in DAO deficiency worldwide. The International Institute of DAO deficiency was founded […]

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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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