One fact I know is true is that smoking causes cancer. I know this is true because everyone I know kept telling me to not smoke when I was younger. I also know its true because I’ve seen commercials on TV that encourages teens not to do drugs. I’ve also seen programs where people explain what happens when you take drugs and how it takes effect. In movies I’ve seen people call cigarettes “cancer sticks” which tell me that it causes cancer.  In websites, people have included how many people have died of cancer, which comes from smoking.