Despite the quantity of material on medical issues which journalists typically receive, and the tremendous public interest in health news, journalists are only rarely able to provide medical information of any real value to the public. Good news, no matter how tentative, always gets more attention than critical assessment. Deadlines pressure journalists to look only at the surface of the issues that they describe, and few have the expertise necessary to judge the importance of their stories. When accurate, authoritative information is available in a structured format; however, the news media can publicize medical findings rapidly, effecting significant changes in public behavior.