Sounds like the Atkins Diet....and I'm not sure about 52lbs in 2 1/2 months.....sounds like a whole lot of weight.....The amount you can lose also probably depends on your starting weight, the higher you are the more you lose...
But as far the diet.....I do believe that it works, because other than the Grapefruit juice you aren't intaking sugars and eating no carbs and protein will throw your body into a state of Ketosis, which will make you loose weight!
Good Luck Hun!
