On any diet you lose a lot of water in first week . On something like slimming world you can get very good losses (I lost 3.5 this week and have been doing a year) but 5 to 7 pounds every week on any diet not likely and probably not healthy. Hope this helps.
Thank's,Yeah so maybe's the first week i could possibly lose 7 pound's due to weight and water loss, then after that i will have to work hard for my weight loss?