Question

By the time John turns 50, what might his smoking habit have done to his health? Provide at least three examples.

Answer 1

- Immune system problems

- Cancer

- Asthma

Step-by-step explanation:

Smoking can affect the balance of the immune system with prolonged use. Chemicals from cigarettes can damage DNA, causing cancer. The smoke from cigarettes can irritate airways, which makes them inflamed, which makes it harder to breathe, causing asthma.