1 BY the way, I saw such restaurants and they are very popular. Right! Your idea of weight-loss restaurant surely is a miraculous resolvement of such problems as extra-weight people health, conventional switvh for healthy food and employment as well.
2 The idea is dood, no doubts... But I think it's not the best way to help horisontally chalenged people with their problems. The matter is what you want to help or to gain money. I guess it is the second, then it's up to you, how much experience you have in the sphere of feedding people and how high your fantasy can ascend... Good luck!
160 points 
1 BY the way, I saw such restaurants and they are very popular. Right! Your idea of weight-loss restaurant surely is a miraculous resolvement of such problems as extra-weight people health, conventional switvh for healthy food and employment as well.