A qualitative review of published research that evaluated tobacco sales policies found a moderate to high quality of evidence associating policies with reduced availability, marketing, and sales of policy-restricted products, as well as decreased youth and adult tobacco use of the products. But the authors also found policy exclusions and exemptions, implementation challenges, tobacco industry actions, and consumer responses that might undermine or mitigate intended policy effects. They also found deficiencies in the designs and methods of some studies. Read the paper.