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The purpose of this study is to compare the evolution of self-reported milk allergy in children and adults within the population of Fez-Meknes region, as well as to investigate the consumption of milk and its correlation to milk allergy.

It is a cross-sectional study conducted in Fez-Meknes region between April 2014 and March 2015 basing on a questionnaire completed by 3,068 children and 1,281 adults.

The results showed that food allergy was more reported among children (29.4 per cent) than adults (16.9 per cent). Milk allergy was reported by 5.3 per cent of children and 4.2 per cent of adults. Children reported mostly cutaneous manifestations (64.8 per cent) while adults reported mostly gastrointestinal manifestations (68.5 per cent). The consumption of milk showed a protective effect against the development of milk allergy (p < 0.001).

The consumption of milk was associated significantly with a low rate of milk allergy, especially in adults. However, the pasteurization of milk seemed to be correlated to increase milk sensitivity.

This paper aims to examine the differences in the self-reported allergies to food, especially fish and shellfish, between children and adults, and to study the association between fish consumption and self-reported fish and shellfish allergy (FSA) according to age.

This study is based on a survey conducted between April 2014 and December 2016 where children and adults were recruited from the general population of the Fez-Meknes region. The total studied population was 4,046 people.

The results show that the self-reported food allergy (FA) of the general population was more frequent among children (28.2 per cent) than adults (16.8 per cent), in which eggs, fish/shellfish, milk and cereals were the most common food cited. With regard to the self-reported FSA, the authors found a prevalence of 9.5 per cent in both children and adults, whereas fish species allergies were more frequent among adults than children. The most common clinical manifestations observed in this population were cutaneous reactions. The study of the association between fish consumption and FSA shows that people who consumed fish had a lower rate of FSA, especially in adults (p < 0.001).

The self-reported FA of the general population was more pronounced in children than adults. Regarding the self-reported FSA, the authors have shown a prevalence of 9.5 per cent in both children and adults, indicating an important sensitivity of their population to fish and shellfish. The authors have shown that consumption of fish was associated significantly with a lower rate of FSA, especially in adults.