A Fond du Lac radiation oncologist says it’s never too late to quit smoking. Dr. Filip Troicki says National No Smoking Day, observed this week is a great opportunity to start the conversation. The CDC estimates that nearly 40 million adults and 4.7 million middle and high school students in the United States use tobacco. Dr. Troicki says the good news is those numbers have been going down. Dr. Troicki says if you want to quit there are several resources available. The Wisconsin Tobacco Quit Line number is 800-Quit-NOW. It’s free, and accessible 24/7 for any Wisconsin resident ages 13 and older.