If you believe that gender is determined solely by genitalia or DNA, you're probably dead set against anyone with a Y chromosome competing in women's sports. The issue is clear, you feel, because testosterone -- along with the muscular development it promotes -- gives these athletes an unfair advantage. But the reality is more nuanced. In An Introduction to Trans/DSD Athletes, Anthony J Catanese MD explores this contentious subject in depth, drawing not only on the latest research but also his extensive personal experience in urology and sports medicine. Taking into consideration the influences of biological factors and the demands of specific competitive activities, Dr. Catanese bypasses simple yes-or-no answers to determine whether the inclusion of athletes with gender dysphoria or differences in sexual development is safe for everyone involved and fair to everyone involved. Informative and thought-provoking, An Introduction to Trans/DSD Athletes is essential reading for sporting officials, physicians, and anyone who is passionate about sports.