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Overview, Risk FactorsOverview
Chronic obstructive pulmonary disease, or COPD is characterized by abnormalities in the lungs that make it difficult to exhale normally. Generally, two distinct diseases are involved: emphysema and chronic bronchitis. According to the World Health Organization (WHO), 75% of deaths from COPD that occur in developed countries are directly related to smoking tobacco. Emphysema and chronic bronchitis cause excessive inflammatory processes that eventually lead to abnor...Read the full article
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