For smokers who quit smoking, when does healing begin?

Question

Quizplus · Accepted Answer

Healing begins immediately after quitting smoking. Within 20 minutes of quitting, heart rate and blood pressure drop. Within 12 hours, the carbon monoxide level in the bloodstream drops to normal. Within 2-12 weeks, circulation improves and lung function increases. Over time, the risk of cancers, heart disease, and other smoking-related illnesses continue to decrease as the body repairs itself.

For Smokers Who Quit Smoking, When Does Healing Begin