The Dangers of Smoking

What is one of the immediate effects of tar from cigarette smoke on the body?

• Increased blood oxygen levels.

• Damage to nerve endings in the nose.

• Thickening of blood vessel walls.

• Coating of teeth and gums, leading to decay.

Which of the following is a way that chemicals in cigarettes contribute to cancer?

• They increase the body's ability to repair DNA.

• They trigger dangerous mutations in the body's DNA.

• They reduce the stickiness of blood platelets.

• They improve the function of blood vessels.

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What happens to a person's body within 12 hours of quitting smoking?

• The risk of fatal lung cancer decreases by 50%.

• Nerve endings responsible for smell and taste start to recover.

• Carbon monoxide levels stabilize, increasing blood's oxygen-carrying capacity.

• The likelihood of developing coronary heart disease becomes similar to a non-smoker.

How long does it take for the likelihood of developing coronary heart disease to become essentially the same as that of a non-smoker after quitting?

• 1 year

• 5 years

• 10 years

• 15 years