I am having my left hip replaced 10-18-13 (i had my right one replaced 1 1/2 years ago) and i was told when i had my right one replaced that i had to lose weight, i lost 56 lbs ,i was on the atkins diet, this time around for the left one i was yet again told to lose weight ,i m on the atkins diet and i started on the diet in July and up until this point with only 1 setback one night i cheated and got right back on the diet the next night i have only been able to lose 6 lbs , i had my thyroid checked,it s fine, i am off seraquil which stimulated my apitite and i barely eat , i can t figure it out Dr, what are your thoughts ?