Castro-Rodriguez et al from Spain have tested the hypothesis that Mediterranean diet can be a protective factor for wheezing in 784 preschool children. Questionnaires were completed by the parents and the children were stratified according to whether or not they had wheezed in the previous year. A Mediterranean diet score was created according to the frequency of intake of several foods such as fruit, grains, fish, vegetables, and pasta. Eating a Mediterranean diet protected against current wheezing in preschool children. In an accompanying editorial by Brown, many interesting suggestions are made concerning future research in the area of Mediterranean diet and lung disease.