Introduction As the year draws to a close, some of us will be reminded that olde acquaintance should not be forgot. So, before we can officially commence the New Year, the American Council on Science and Health (ACSH) would like to reflect upon this year past. We'd especially like to spend an extra moment considering what we hope the world will eventually learn to forget the most unfounded health scares of 2010. What were these? Not all of them were so novel. Just as old habits die hard, old scares don t seem to disappear easily either, and some headlines that received noted media attention in years past have reared their ugly heads once more in this current publication of our annual list of health scares.