Prevalence of Common Nutritional Deficiencies and Supplement Recommendations in Bariatric Patients Calcium, Vitamin B1 (thiamine), Vitamin B12 (cobalamin), Folic acid, Vitamin A,Vitamin D, Vitamin E, Vitamin K, Iron, Zinc #Bariatric #Gastric #Bypass #Nutritional #Deficiencies #Deficiency #Vitamin #Diagnosis