Ask Mr. Dad: Up in smoke

Dear Mr. Dad: I got a call from my 15-year-old son's school principal today telling me that my son is being suspended for smoking on campus. Needless to say, my wife and I aren't very happy about this. My son, who is a little overweight, says he can quit anytime and that he only started because it will help him lose weight. He also says he's going to switch to electronic cigarettes, which he claims are not a health problem. Should we be worried? …