Copper and zinc serum levels after derivative bariatric surgery: differences between Roux-en-Y Gastric bypass and biliopancreatic diversion

There are limited data on the prevalence of copper and zinc deficiency in the long term after bariatric surgery. We analysed copper and zinc serum levels in a cohort of 141 patients, 52 who underwent Roux-en-Y gastric bypass (RYGB) and 89 biliopancreatic diversion (BPD), with a follow-up of 5 years. Mean copper level was significantly lower in the BPD group (P