Thin Zone Keto number of patients going through surgery increases, so do corrective surgeries for the unwanted and uncomfortable skin. This extra skin can actually be a serious problem and can actually cause infections, rashes and even back problems. Post-Bariatric Surgery and Treatment Options The most important determinant of how much loose skin an individual will have following is their age. Younger patients tend to have less loose skin than those who are older because of the strength of collagen in your skin. The next most importa.