I had to have 6 months of diet counseling, along with a bunch of other testing. I was really pissed about having to have 6 months of the surpervised diet, but I would not have had the success that I have had with out it. Plus, it gave me time to get weaned off of soda, I used to drink 2 to 4 LITERS of Pepsi a day and I had to quit smoking before my surgeon would do surgery. I had no comprehension of how little I would actually eat post surgery and my counselor was great.