à rlig rapport om forskningen i Landstinget Gävleborg 2010

factors differed between the age‐groups. BMI had a significantly higher impactin the middle‐aged and elderly.In subjects participating in the clinical investigations in 1990, sensitization topets, were determinants of both persistent asthma and onset of asthma in 2003.The risk for persistent asthma was threefold. The risk for onset of asthma wasmore than doubled.Smoking at baseline in 1990 was the strongest determinant of being a smoker in2003. Allergic sensitization and clinically verified asthma were not associatedwith smoking habits in 2003. No differences in changing smoking habits could beidentified between smokers with or without asthma.In conclusion, modifiable lifestyle factors are important risk factors for adultonset asthma. The co‐occurrence and interplay between asthma and cigarettesmoking is still puzzling.Bild 8. Monica Uddenfeldt spikar upp sin avhandling för allmän beskådan i Universitetshuset,Uppsala. Foto: Anna Rask‐Andersen.34