Cigarette smoking is considered to be more of a pollutant than air pollution. Which of the following is true?

ACigarette smoking causes cardiovascular disease, cancer, chronic lung disease and diabetes

BCigarette smoking pollutes the system with nicotine, nickel, cadmium, heavy metals and plastics

CPeople exposed to second-hand smoke at home or work raise their risk of heart disease by 25-30%

DAll of the above ✓ Correct

Correct answer: (D) All of the above

Explanation

Cigarette smoking causes heart disease, cancer, chronic lung disease and diabetes, which is correct.

It loads the body with nicotine, nickel, cadmium, heavy metals and other toxins, which is correct.

Second-hand smoke at home or work raises heart disease risk by roughly a quarter to a third, which is correct.

Tobacco smoke carries thousands of chemicals, many of them carcinogenic.

Each of these descriptions about smoking's harms holds true.

Smoking remains a leading preventable cause of death worldwide.

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