Final answer:
Smoking cessation at 24 hours to 2 weeks is an important time period for individuals trying to quit smoking as it marks the beginning of several health improvements. The primary topic is the health benefits observed during the early stages of smoking cessation.
Step-by-step explanation:
Smoking cessation at 24 hours to 2 weeks can be a critical period for smokers who are trying to quit. During this time, the body begins to repair itself and many immediate health benefits can be observed. For example, after 24 hours, carbon monoxide levels in the blood decrease, allowing more oxygen to reach vital organs such as the heart and lungs. After 2 weeks, lung function starts to improve and the risk of heart disease begins to decrease.