Dr. Nick Yphantides weighed 470 pounds at one point. He then decided to change his life. He took a sabbatical for one year to focus on what he enjoys most (baseball) and to lose weight in the process. He went on a medically supervised liquid protein diet (soybean based) for several weeks. Just over a year later he had lost an amazing 270 pounds. He's been quoted as saying "Food was never meant to be your friend, Valium on a plate, where you turn for comfort, an alternative to boredom. Food is for nutrition. I eat for very different reasons than I did in the past. How I eat and why I eat is more important than what I eat."
There is an inspiring 7 minute video about his weight loss story here. It shows him at his heaviest weight and his current weight. At one point, after he had lost 103 pounds, he says he was very discouraged because he didn't feel much different. But then he went on a fishing trip with his brother in Alaska and happened to catch a 100 pound fish (as shown in the video). That experience got him completely motivated again and he was able to persevere until his goal was reached.
