In 2002, 2004, 2005, 2006 2008, and 2010 the US Centers for Disease Control and Prevention named tobacco in the movies a major factor in teen smoking. In 2007, the Institute of Medicine of the National Academy of Sciences concluded that:
Exposure to depictions of smoking in movies is associated with more favorable attitudes toward smoking and characters who smoke, and these positive views are particularly prevalent among youth who themselves smoke.
Exposure to smoking in movies increases the risk for smoking initiation. Cross-sectional and longitudinal studies provide clear support that youth report greater susceptibility and intentions to smoke and are more likely to actually try smoking following exposure to smoking in the movies and on television. Furthermore, even after controlling for other factors known to be associated with adolescent smoking intention and tobacco use, studies show a clear dose effect, whereby greater exposure to smoking in the movies is associated with a greater chance of smoking.
The increased risk for smoking initiation as a result of exposure to smoking in the movies can be reduced by antismoking advertisements and parental restriction of which movies their children watch.