These are the health effects of smoking base on my research. I am going to introduce the effects of smoking, and I hope you agree with them.
Smoking is the inhalation and exhalation of the fumes of burning tobacco.
About fifty million people in the United States currently smoke a total of five hundred and seventy billion cigarettes each year. As recently as the 1940s, smoking was considered harmless, but laboratory and clinical research has since proved that cigarette smoke contains around four thousand chemicals, some of which are highly toxic. According to the American Cancer Society, smoking is the most preventable cause of death in America today. Under the study of smoking, people realize that the influences of tobacco smoke are not only the smokers, but also the non-smokers who inhale the tobacco smoke. Besides this, tobacco smoke affects the human body, too.