Hi Anitha and thanks for the query. I am so sorry to hear about this cyst and the operation you underwent. i am however comforted that you have been feeling a lot better since the procedure except for minor headaches. This is normal and eve without head surgery, we all get headaches now and then. When a cyst is opened, it can be totally removed, if possible or not removed. When it cannot be removed, it is sufficiently destroyed so as to prevent future recollections. I am pretty convinced that this is what you was done in your case.Though the chances are real that it can recur but these are very small. I am confident you had the best possible procedure given the surrounding circumstances. There is no need in changing your diet or eating any specialised products. You may at will but not that they have any impact on the disease condition that you had. The decision is entirely yours to make. I hope that you find this helpful. I wish you well. Feel free to ask for more information if need be. Thanks. Dr. Ditah, MD