This one impressive tale of a man who lost 170lbs can be read on The Huffington Post.
Name: Jeremiah Sears
Age: 32
Height: 5'11"
Before Weight: 358 pounds
How I Gained It: Ever since I can remember, I have always had a problem with my weight. From the time I was in high school I was creeping up on 300 pounds, but I learned to live with it. I was constantly getting fast food or eating a snack. I worked nights, so when I got home I would eat a big meal and then go to bed.
I had it in my head that I was always going to be this way no matter how hard I tried. Over the years I tried hundreds of diets and diet pills waiting for a miracle to happen, but it never did. When the diets didn't work it would make me depressed, and I would gain more weight. I was fighting a losing battle with myself. I had been to the doctors to check on some complications I was having and the doctor informed me that if I didn't lose weight my blood pressure and sugar were going to get out of control. I took the doctor's advice with a grain of salt and kept living the same way. After a few months of not following the doctor's orders, I started to feel like even getting up in the morning was a struggle.
Read the rest here: http://www.huffingtonpost.com/2012/03/23/weight-loss-success-jeremiah-sears_n_1341901.html