speaking from my experience, mines had to be supervised as in a nutritionist, u go visit once a month, they record ur weight, the calories u ate that month what u ate so on so on.. i had to log in and record everything i ate, n my nut monitored it, after ur done with ur last meeting, by then they will be submitting everything to ur insurance, i had to go to two classes on how to eat post op, n was given a booklet with guided instructions on the vitamins, times ur suppose to eat, calories.. so far so good! i am going to be three month post op on the June 5 n i can say i am half way to goal! yay... so yea check that out. they r there to guide u through the six month, suggesting ur calorie intake which will enable u to lose weight.. personally.. i went on a food funeral thu my six month n was actually gaining 2 to 6 pounds here n there.. but that's because i thought because of my weight n bmi that i wasn't going to get approved.. but if i knew i would of stick to the darn diet my nut put me on! would have been like 30 pounds less post op.. n probably at goal already!..