“…Patients undergoing bariatric surgery may develop over time, complications such as anorexia, diarrhea and dumping syndrome. Over time, appear late complications such as, for example, ulcers, osteoporosis, protein-calorie malnutrition, impaired absorption of calcium, iron and vitamins 19,26 . Besides these, the context is important and anemia due to gastric resection, leading to iron deficiency, folic acid and vitamin B12 19 .…”