Smoking is the most important preventable cause of premature death and chronic disease. It causes one in five deaths in the United States. In addition, although smoking is carcinogenic on its own, it also increases the effectiveness of other carcinogenic agents.

It was determined that middle-aged women who do not smoke, do not consume alcohol, are not overweight, and follow a healthy diet and exercise have 83% less risk of coronary artery disease than those who do not. In the light of the recently strengthened evidence, it is stated that the risk of developing cancer in the rest of their lives increases for passive smokers. Studies show that quitting smoking can be beneficial no matter how old a person is. Reduction in coronary artery disease, cancer, stroke and hearing loss with smoking cessation; respiratory functions, blood circulation, lung circulation are improved. So the best time to quit smoking is right now.