Christopher Wanjek is the author of the health books "Bad Medicine" and "Food At Work" and the novel "Hey, Einstein!" a comical nature-versus-nurture tale about raising clones of Albert Einstein in less-than-ideal settings. His column, Bad Medicine, appears regularly on LiveScience.
Fast-food restaurants' claim of having healthy menus falls flat in a new analysis showing that they are only marginally healthier than 14 years ago.
Confusion and doubt still linger nearly two years since vitamin-D guidelines were issued.