Li S, Yu H, Zhang P, et al. - Findings reveal that BMI limitations in predicting diabetes remission (DR) after Roux-en-Y gastric bypass (RYGB) could be due, in part, to the nonlinear association between muscle mass and BMI.

• This study involved 501 patients with type 2 diabetes mellitus and overweight or obesity, of whom 186 patients underwent RYGB.

• The presence of a nonlinear link between psoas cross-sectional area (CSA) and BMI was found, whereas psoas CSA demonstrated a highly positive correlation with estimated fat-free mass index (eFFMI).

• One- and 5-year DR was better predicted by baseline psoas CSA and eFFMI instead of BMI.