Henry Gonzalez lost weight without surgery or meds.Courtesy of Henry GonzalezHenry Gonzalez is the founder of a San Francisco-based clothing brand.He lost about 350 pounds without surgery or medicine. He's managed to keep the weight off for seven years.This as-told-to essay is based on a conversation with Henry Gonzalez. It has been edited for length and clarity.I've lost nearly 350 pounds and kept the weight off. As a kid, I was never small. I …