The second edition of this very valuable resource has all the attributes of the first. Written for the layperson, articles are clear, comprehensive and detailed. There are excellent charts and illustrations to further make the material more understandable. Almost every conceivable medical condition is covered, with additional chapters that highlight women's, men's and children's health issues; specific information is also provided on the aging body. According to the editors, the content has been expanded to cover medical treatments or advances that have occurred since 1997, when the first edition was published. The editors have included new drug options for HIV-positive patients, as well as a section on herbal supplements and their possible interactions with prescribed medications.