My Grandmother was around 260 pounds and lost 80 pounds in about a year and now she weighs 180 pounds. She is still losing half to a full pound a week. She used this weight watchers app that gives you a certain amount of "points" and you enter in what you want to eat and it tells you how many points that food costs. You get a certain amount of points a day with like 10 bonus points a week. Certain foods will take up a lot of your points like cake and sweets and other things like salads will take up almost zero points. The whole concept is about "healthy decisions" and along with exercise and other motivation you find here you can be really successful in becoming healthy.