What’s the weirdest thing you’ve ever wanted to know about the penis but were afraid to ask? Dr. Aaron Spitz has that answer—and many more.

Let Dr. Spitz—clinical professor at UC Irvine’s Department of Urology and a regularly featured guest on The Doctors—become your best friend as he fearlessly guides you through the hairiest and the scariest questions in The Penis Book. An unflinching, comprehensive guide to everything from sexually transmitted infections to the science of blood flow, The Penis Book prominently features an easy-to-follow holistic five-step plan for optimum penis health, including plant-based eating recommendations, information on some penis-healthy foods, and suggested exercises for penis wellbeing. Useful to men and women alike, The Penis Book is a one-stop-shop for the care and maintenance of the penis in your life.