Question

why is cigarette smoking harmful​

Answer 1

Answer:

Smoking causes cancer, heart disease, stroke, lung diseases, diabetes, and chronic obstructive pulmonary disease (COPD), which includes emphysema and chronic bronchitis. Smoking also increases risk for tuberculosis, certain eye diseases, and problems of the immune system, including rheumatoid arthritis.

Explanation:

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Answer 2

Answer:

Tobacco contains poisonous substances that affect people’s health. Two of these poisons are:

• Carbon monoxide. Car exhaust fumes also produce this substance, and it is fatal in large doses. It replaces oxygen in the blood and starves the organs of oxygen, stopping them from functioning correctly.
• Tar. This is a sticky, brown substance that coats the lungs and affects breathing.