Impact of bariatric surgery on serum urate targets in people with morbid obesity and diabetes: a prospective longitudinal study

Objectives Weight loss leads to reduced serum urate (SU) in people with obesity. However, the clinical relevance of such reductions in SU is unknown. This study examined the impact of non-surgical weight loss and bariatric surgery on SU targets in people with morbid obesity and diabetes. Methods The study was a single-centre, prospective study of 60 people with type 2 diabetes and body mass index ≥35 kg/m 2 . Following 6 months of non-surgical weight loss, all participants had laparoscopic sleeve gastrectomy, with a further 1 year of follow-up. Serial SUs were measured throughout the study. Results Participants experienced mean (SD) weight loss of 5.5 (4.1) kg prior to surgery and 34.3 (11.1) kg following surgery. SU did not change following non-surgical weight loss (0.38 (0.09) mmol/L at baseline and 0.38 (0.10) mmol/L at follow-up), but increased to 0.44 (0.15) mmol/L in the immediate postoperative period and reduced to 0.30 (0.08) mmol/L 1 year after surgery (p Conclusions Clinically relevant reductions in SU occur following bariatric surgery in people with diabetes and WHO class II or higher obesity.