Following a post on the UG Forum, I found a story about DJ, a BJJ student. He went from 179kg (396lb) to 79kg (179lb) in just over two years.
That is nothing short of amazing. Just think of it: he lost more weight than he ended up weighing. Or put in other words, he is now less than half the size he was when he started. My hat off to DJ and to the people at his school who helped and supported him.
I've read other stories about big weigh losses and life transformations through training BJJ or other demanding activities. It can be done!
My wish is that more of the big people can be motivated to help themselves. I see so many of them. But then again, there are so many people of all sizes whose main exercise area is the couch in the loungeroom. Too busy, too old, too tired, too unfit (!) are the most common excuses cites when some form of exercise is suggested.
We don't all have to turn into fitness freaks. But everyone can do something to help improve their health and their life in general. And those folks like DJ, who have made extraordinary changes, are an inspiration to others.