Why should you not smoke up to 24 hours before a operation?

Smoking can have a number of negative effects on the body, including:

- Increased risk of infection: Smoking damages the immune system, making it more difficult for the body to fight off infection. This can increase the risk of infection after surgery.

- Delayed wound healing: Smoking can constrict blood vessels, which can slow down the delivery of oxygen and nutrients to the surgical site. This can delay wound healing and increase the risk of complications.

- Increased risk of complications: Smoking can increase the risk of a number of complications after surgery, including:

- Blood clots

- Heart attack

- Stroke

For these reasons, it is important to avoid smoking for at least 24 hours before a surgery.