Anke Hüls, Dorothee Sugiri, Michael J. Abramson, Barbara Hoffmann, Holger Schwender, Katja Ickstadt, Ursula Krämer, Tamara Schikowski European Respiratory Journal 2019 53: 1801780; DOI: 10.1183/13993003.01780-2018 Abstract Introduction The beneficial effect of improving air quality on lung function in the elderly remains unclear. We examined associations between decline in air pollutants and lung function, and effect modifications by genetics and body mass index (BMI), in elderly German women.