Study
fat-free mass loss
In light of these considerations, the aim of this study is to assess the effect of a daily consumed shake of protein powder dissolved in water, known as a clear protein shake, during the first 6 months after bariatric surgery on fat-free mass loss in the first 12 months after LRYGB. The study design is a randomized, placebo-controlled, superiority trial that compares standard care (dietary recommendations alone) to additional protein drinks during the first 6 months postoperative (dietary recommendations plus additional protein drinks).