Liu F, He J, Zhu Y, et al. - The body adiposity index (BAI) is a reliable surrogate marker of weight loss outcome following Roux-en-Y gastric bypass (RYGB). The predictive value of adiposity indexes in favourable outcomes after weight loss therapies is critical for the implementation and optimization of individualized and refined weight loss treatments for obese individuals.

• The 38 men and 67 women who underwent RYGB between January 2017 and May 2018 were included in this prospective study.

• Participants with lower BAI (< 32.54 in men and 37.39 in women) had higher percent of excess body mass index loss and %EWL (percent of excess weight loss) 12 months after surgery.

• BAI was found to be independently related to %EWL 12 months after surgery in both men and women.

• BAI had a significantly higher area under the receiver operating characteristic curve (0.773 in men and 0.818 in women) than visceral adiposity index, lipid accumulation product, and cardiometabolic index.