<qa>  What is the minimum invasive surgery performed by making small incisions in the abdomen?Participants having obesity surgery will receive laparoscopic minimally invasive surgery performed by making several small incisions in the abdomen and inserting a camera called a laparoscope an adjustable gastric band, a sleeve gastrectomy or roux en Y gastric bypass. In addition to the regular surgical procedures, the surgeons will remove laparoscopically about 10g 1 tablespoon of fat from within the abdomen. This fat tissue will be processed and stored for future study at completion of the study of your metabolism pre-treatment. Participants will complete post-operative follow-up appointments with their surgeon as required. 