Other factors that influence the total weight loss include how well prepared the patient is before surgery. Preparation not only includes mental and physical preparation, but it also includes nutritional preparation, and it seems to be one of the most important determining factors for success. Pre-operative preparations include supplementation and protein intake. This is why you will see that all patients at OCC undergo pre-surgery preparation and are followed for 5 years after the procedure. OCC Wellness is an online program that helps you achieve your goals.