Part fertility guide, part owner"s manual to the male reproductive system, The Male Biological Clock attempts to ditch some of the numerous existing myths about men"s roles in pregnancy while introducing up-to-date medical research on hormones and health. In modern culture, the words "male" and "biological clock" aren"t typically seen together, but Dr. Harry Fisch has news: after the age of 35, men have increased rates of infertility, can contribute to the likelihood of a miscarriage, and are more likely to father a child with Down syndrome. Blunt and informative, the book starts off with a basic introduction to male anatomy, and goes into greater detail on the subject of testosterone. A number of simple graphs and charts are included, as well as detailed weighing of pros and cons of a number of currently available medical treatments for a wide variety of issues. Erectile dysfunction gets a short chapter to itself, which is mainly a discussion of how to get the most out of prescription drugs--a later section on sexual health provides less dramatic suggestions, such as proper diet, moderate exercise, and avoiding anabolic steroid treatments. The rest of the guide focuses on correcting male infertility, as well as addressing (if briefly) the emotional side of sexual and fertility problems. In every chapter, a few patient stories highlight individual topics; these do a fine job of personalizing health problems and limiting the amount of straight medical jargon. Fisch"s gently positive spin somewhat masks the serious point he"s making: men need to take care of their bodies, sooner rather than later. While this book focuses more on solving existing problems than on preventing the problem in the first place, its balance of general information and specific suggestions makes it an excellent reference for men of all ages. --Jill Lightner