Why home environment matters for COPD (Chronic Obstructive Pulmonary Disease)
Cold homes are causally implicated in COPD exacerbation and excess winter deaths. Each 1°C drop in indoor temperature below 18°C increases respiratory and cardiovascular mortality risk in COPD patients. Indoor PM2.5 and NO2 (from cooking, combustion, and traffic infiltration) accelerates lung function decline. Damp and mould raise infection risk in already-compromised airways. Inadequate humidity control compounds bronchoconstriction in winter.
UK prevalence: Approximately 1.3 million people are diagnosed with COPD in the UK, with NICE estimating a further 1-2 million people undiagnosed. COPD is the second-leading cause of emergency admission to UK hospitals.