”WHO statistics on COPD:

• Chronic obstructive pulmonary disease (COPD) is the fourth leading cause of death worldwide, causing 3.5 million deaths in 2021, approximately 5% of all global deaths.
• Nearly 90% of COPD deaths in those under 70 years of age occur in low- and middle-income countries (LMIC).
• COPD is the eighth leading cause of poor health worldwide (measured by disability-adjusted life years)
• Tobacco smoking accounts for over 70% of COPD cases in high-income countries. In LMIC tobacco smoking accounts for 30–40% of COPD cases, and household air pollution is a major risk factor.”

World Health Organization – WHO (https://www.who.int/news-room/fact-sheets/detail/chronic-obstructive-pulmonary-disease-(copd))