Another important point to consider in a bariatric context is skin and tissue health after major surgery. Weight loss surgery often leads to older, loose skin because of rapid changes in body composition. Gelatin (or collagen) could theoretically help support skin structure, since it provides amino acids like glycine and proline, which are building blocks for collagen in the body. Some patients might view the gelatin trick not just as an appetite management tool, but also as a way to support skin integrity during their weight-loss journey. Bariatric Gelatin Trick Review