British-born biologist Baldwin has compiled a breezy guide to men's sexual organs and their health, covering functional, preventive, and disease issues. Less earthy in her language than James Gilbaugh's A Doctor's Guide to Men's Private Parts ( LJ 4/15/89) and less technical than Yosh Taguchi's Private Parts (Doubleday, 1989), she covers concerns from birth to old age, including circumcision, maintenance and care, hormones and drugs, sexual dysfunction, sexually transmitted diseases (including AIDS), and stress management. This work is a good middle-ground choice for its readability (although it's occasionally superficial and cutesy) and avoidance of street terminology.