Curr Opin Clin Nutr Metab Care. 2018 Jan;21(1):58-63. doi: 10.1097/MCO.0000000000000437.
The growing obesity epidemic is associated with an increased demand for bariatric surgery with Roux-en-Y Gastric Bypass and Sleeve Gastrectomy as the most widely performed procedures. Despite beneficial consequences, nutritional complications may arise because of anatomical and physiological changes of the gastrointestinal tract. The purpose of this review is to provide an update of the recent additions to our understanding of the impact of bariatric surgery on the intake, digestion and absorption of dietary protein.
After bariatric surgery, protein intake is compromised because of reduced gastric capacity and aversion for certain foods. A minority of patients reaches the recommended protein intake of minimal 60 g per day, which results in the loss of fat-free mass rather than the desired loss of fat mass. Despite inadequate protein intake, protein digestion and absorption do not seem to be impaired suggesting that other mechanisms could counteract the reduced secretion of digestive enzymes and their delayed inlet.
After bariatric surgery, protein supplementation or diet enrichment could attribute to achieve the minimal recommended protein intake and benefit the amount and composition of postoperative weight loss.
肥胖症的流行呈上升趋势，因此对减肥手术的需求也在不断增加，其中 Roux-en-Y 胃旁路术和袖状胃切除术是最广泛应用的两种术式。尽管减肥手术有很多益处，但由于胃肠道解剖和生理的改变，可能会出现营养并发症。本文旨在对减肥手术后饮食蛋白摄入、消化和吸收的最新研究进展进行综述。
减肥手术后，由于胃容量减少和对某些食物的厌恶，蛋白质的摄入量减少。少数患者能够达到每天最低 60 克的推荐蛋白质摄入量，结果导致去脂体重丢失，而不是理想的体脂丢失。尽管蛋白质摄入不足，但蛋白质消化和吸收似乎并未受损，这表明其他机制可能会抵消消化酶分泌减少及其延迟进入的影响。
减肥手术后，补充蛋白质或饮食强化可能有助于达到最低推荐蛋白质摄入量，并有益于术后体重减轻的数量和组成。
