My teenage son is using smokeless tobacco (chewing tobacco). I am afraid that this may lead to smoking. Is my concern justified?

A recent study says that your concern is justified. This study showed that there is a strong association between adolescents using chewing tobacco and smoking. The study also found that using tobacco is strongly correlated with other risk-taking behaviors. This may not be news to any of us who have raised teenagers. Intervention through education may help, but results for teens are extremely varied. The study found that getting teens involved in activities that prohibit the use of tobacco products, like school sports, may be even more beneficial to preventing tobacco use than education on the harm of tobacco or parental intervention.