Ex-smokers who notice the warning labels on cigarette packs are less likely to start smoking again.  How much of a difference do these really warning labels make for ex-smokers? A four-country survey asks ex-smokers about cigarette warning labels over the course of 5 years to determine if they make any impact on whether or not they return to the smoking life. Warning labels may not be 100 percent effective, but they do appear to make a difference. Encourage people to notice warning labels on cigarette packs. Researchers from the VicHealth Centre for Tobacco Control, The Can...