An interview with Joshua R Gonzalez, MD, an L.A. based urologic surgeon, on erectile dysfunction. BY VICTOR MELAMED Dr. Gonzales—let’s get right to it—what causes erectile dysfunction. Erectile dysfunction (ED) can be caused be by a number of different issues. Erections are dependent on four factors working together: hormones, blood flow, nerves, and psychology. It … Continue reading The Erection Expert