First, smoking is an independent risk factor for cardiovascular disease The top 3 causes of death due to smoking are cardiovascular disease, chronic obstructive pulmonary disease and lung cancer, cardiovascular disease is the most common cause of death accounting for 35% of total deaths due to smoking. Smoking aggravates the degree of coronary artery disease and increases the number of angina attacks. Smoking increases the risk of death by more than four times in patients with coronary artery disease and also increases the risk of infarction by a factor of one after coronary intervention! There is also a dose-response relationship between the amount of smoking and the risk of myocardial infarction. The risk of myocardial infarction was 6.3 times greater in smokers who smoked >20 cigarettes per day than in nonsmokers. The risk of nonfatal myocardial infarction was 3 times higher in current smokers than in never smokers, with an increased risk of 5.6% for each cigarette smoked. In addition, the amount of smoking is strongly associated with the degree of risk, and even very small amounts of smoking (e.g., 1 to 9 cigarettes per day) increase the risk of acute myocardial infarction. The relative risk for patients who smoked more than 20 cigarettes per day was 4.59 times higher than for nonsmokers. Second, smoking and other risk factors synergistically amplify the risk of cardiovascular disease Smoking is not only an independent risk factor for cardiovascular disease, but it has a synergistic amplifying effect with other risk factors. For example, in smokers, the risk of acute myocardial infarction from diabetes is 1.8 times higher than in nonsmokers. When combined with other risk factors, the absolute risk of developing the disease is higher than the sum of the two risk factors. Similarly, the presence of risk factors such as elevated cholesterol and hypertension in combination with smoking amplifies the risk of coronary heart disease. Studies have shown that smoking cessation can reduce the risk of death from coronary heart disease by 36%, which is better than other secondary prevention measures for coronary heart disease, such as statins, which can reduce the risk of death from coronary heart disease by 29%, aspirin by 15%, beta blockers by 23%, and ACE inhibitors by 23%. Smoking cessation reduces the risk of myocardial infarction in smokers. Patients who had an acute myocardial infarction had an 18% reduction in the risk of death with a reduction of 5 cigarettes per day. Smoking cessation was effective in reducing the risk of death after coronary intervention, and the overall risk of death after coronary intervention was significantly higher in smokers compared with quitters, 1.44 times higher. Quitting smoking for 48 hours began to reduce the risk of heart attack due to smoking; quitting for 2 months led to a reduction in blood pressure and heart rate; quitting for 6 months reduced risk parameters for cardiovascular disease and improved arterial stiffness; quitting for 1 year halved the risk of heart attack due to smoking; and quitting for 15 years resulted in a heart attack risk comparable to that of never smokers. Many studies have reported that various forms of anti-smoking campaigns can reduce the incidence of myocardial infarction, and Dr Carl et al. found that after the city of Pueblo in central Colorado enacted a citywide smoke-free ordinance in 2003, the rate of hospitalization for acute myocardial infarction dropped by 27% among city residents, but there was no significant change in control communities. In 2004, the British Medical Journal published a study from Helena, Montana, that found a 40% decrease in acute myocardial infarction admissions within 6 months of the city’s smoke-free ordinance. When the ordinance was lifted, the hospitalization rate returned to the original level. In addition, a study in Piedmont, Italy, found an 11% decrease in hospital admissions for non-smoking patients under 60 years of age five months after the national smoking ban in public places. Fourth, there are ways to quit smoking easily and safely Without help and entirely on their own, quitters will experience withdrawal syndrome, which is the main reason why many smokers fail to quit. This is because the sudden drop in nicotine levels in the body can make the body uncomfortable, leading to irritability, anxiety, fidgeting, insomnia, weight gain, anxiety or depression, fluctuations in blood pressure and heart rate, and muscle and bone discomfort. For smokers with cardiovascular disease, it is especially important to quit safely and prevent blood pressure and heart rate fluctuations due to withdrawal syndrome. Scientific methods of quitting smoking are available, such as specialized smoking cessation medications. With the help of a physician and a combination of psychological and pharmacological treatment, quitting becomes easier and safer, with a 6 to 8 times higher success rate.