30% of the world's population suffers from some type of allergy, in 25 years it will be 50%. In Spain this percentage increases the figure four points to 7.4%.

In the case of adults, behind half of the reactions are fruits, nuts such as almonds, peanuts or walnuts, and vegetables, such as celery. The president of the Spanish Society of Allergology and Clinical Immunology, Ignacio Jesús Dávila González, explains that it is about discovering "how the body maintains IgE levels in the face of an undetermined allergy"