human
I've been hearing a lot about the dangers of smoking.
assistant
I know, it's really bad for you.  Smoking is one of the leading causes of preventable death in the United States. In fact, it's estimated that more than half of all smokers will die from a smoking-related disease. Smoking can cause heart and lung diseases, cancer, stroke, and other serious illnesses. It also increases your risk of getting other diseases, like diabetes and high blood pressure.