The Implications of Smoking in Patients with Chronic Obstructive Pulmonary Disease and Lung Cancer

Abstract Chronic smoking remains one of the most significant public health concerns worldwide, serving as a major risk factor for respiratory and cardiovascular diseases, as well as various types of cancer. This study explores the impact of smoking on chronic obstructive pulmonary disease (COPD) and lung cancer, focusing on aspects such as prevalence, symptom severity, and epidemiological correlations between these conditions. This study was conducted on a cohort of 164 patients monitored at the National Institute of Pneumophthisiology “Marius Nasta” in Bucharest, identifying a significant association between smoking and pulmonary disease severity. The findings suggest that COPD may contribute to an increased risk of lung cancer, possibly due to shared pathogenic mechanisms such as chronic inflammation, oxidative stress, and tissue hypoxia. Considering the profound impact of these diseases on patients’ quality of life and mortality, the study highlights the urgent need for effective preventive strategies, including smoking cessation programs, lung cancer screening, and a multidisciplinary approach to COPD management.