What vitamins and minerals do you check yearly for patients post gastric bypass surgery?

Following Roux-en-Y gastric bypass it is essential to monitor micronutrients, vitamins, and minerals because malabsorption and long-term complications may occur with improper care. Based on ASMBS 2016 Nutrition Guidelines, AACE/TOS/ASMBS 2019 updates, and Endocrine Society recommendations, here are ...