Estimates are that more than 12 million people in the U.S. become infected with a sexually transmitted disease (STD) annually and that many of them do so because they rely on misinformation or are too embarrassed to ask for accurate information. Marr clearly presents up-to-date material on 22 STDs. In the book"s first part, she covers anatomy, offers basic information, and cites case histories that have a personal ring instead of sounding made-up. She shows how a moment"s exposure can wreck a life, distinguishes between intercourse and "outercourse," and offers a down-to-earth chapter on what "safe" sex really involves. In the encyclopedic second part, she describes in detail what each disease is, its prevalence and its symptoms; how it is transmitted; diagnostic tests for it; and treatments of it. She scatters bold-faced summary statements throughout the book to emphasize major points and to serve as marginal subject indexing. This is an authoritative book that speaks clearly to a...