The abbreviation COPD stands for chronic obstructive pulmonary disease, which describes a collection of conditions that are harmful to the lungs. Because of these illnesses, breathing becomes progressively more difficult over time. Chronic bronchitis and emphysema are the two kinds of COPD that are diagnosed most frequently. Both of these conditions are long-term disorders that impede the normal movement of air through the lungs. Cigarette smoking is associated with the majority of instances of COPD.
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