About a year ago, the Centers for Disease Control issued a highly publicized report stating that obesity-related health problems kill 400,000 Americans every year -- an "epidemic" second only to smoking in causing preventable deaths. The story was big news. A host of outside skeptics, however, such as the Center for Consumer Freedom, questioned the findings, and their efforts eventually forced the CDC to admit that at least part of the study was flawed. Now, despite even more critical evidence, the CDC says its mistakes don't matter.