In this podcast, Rachael Moses, Multimedia Editor of Thorax BMJ, is joined by Professor Ashley Woodcock, Manchester Academic Health Sciences Centre, The University of Manchester, UK, to discuss the paper "Effects of switching from a metered dose inhaler to a dry powder inhaler on climate emissions and asthma control: post-hoc analysis."

This paper was a secondary analysis of the Salford Lung Study in Asthma. In a real world study SLS asthma showed that a once daily combination treatment in a dry powder inhaler improved asthma control over one year, versus usual treatment. This secondary analysis looked at the impact on carbon footprint for those patients switching from a pressurised MDI to DPI treatment.