Fig. 2　Changes in transaminases up to 12 months after LSG. (a) In the mid-to-long-term postoperative follow-up, AST values decreased at 3, 6, and 12 months. (b) ALT values decreased at 3, 6, and 12 months postoperatively (. *P < 0.01 **P < 0.001, Wilcoxon signed-rank test, compared to preoperative values) LSG, laparoscopic sleeve gastrectomy.