Final answer:
The three greatest health concerns associated with long-term smoking are cancer, cardiovascular disease, and respiratory diseases.
Step-by-step explanation:
The three greatest health concerns associated with long-term smoking are:
- Cancer: Smoking is the primary cause of lung cancer, and it also increases the risk of many other types of cancer. Tobacco smoke contains chemicals that are known carcinogens.
- Cardiovascular disease: Smoking damages the cardiovascular system, leading to an increased risk of high blood pressure, blood clots, heart attack, and stroke.
- Respiratory diseases: Smoking is the major cause of chronic respiratory diseases, such as chronic obstructive pulmonary disease (COPD) and pneumonia.