NEET BIOLOGY

Detailed explanation-1: -Smoking can cause lung disease by damaging your airways and the small air sacs (alveoli) found in your lungs. Lung diseases caused by smoking include COPD, which includes emphysema and chronic bronchitis. Cigarette smoking causes most cases of lung cancer.

Detailed explanation-2: -The mystery of why some people appear to have healthy lungs despite a lifetime of smoking has been explained by UK scientists. The analysis of more than 50, 000 people showed favourable mutations in people’s DNA enhanced lung function and masked the deadly impact of smoking.

Detailed explanation-3: -The chemicals in tobacco smoke damage the delicate lining of the lungs and can cause permanent damage that reduces the ability of the lungs to exchange air efficiently. This can ultimately lead to chronic obstructive pulmonary disease, including emphysema.

Detailed explanation-4: -Smoking causes cancer, heart disease, stroke, lung diseases, diabetes, and chronic obstructive pulmonary disease (COPD), which includes emphysema and chronic bronchitis.