[Diagnosis and treatment of iron deficiency, with or without anemia, before and after bariatric surgery].

Bariatric surgery (BS) is an increasingly used therapeutic option for severe obesity which allows patients to achieve sustained weight loss over time and resolution or improvement in most associated pathological conditions. Major mid- and long-term complications of BS include iron deficiency and iron-deficient anemia, which may occur in up to 50% of cases and significantly impair patient quality of life. These changes may be present before surgery. The aim of this review was to prepare schemes for diagnosis and treatment of iron deficiency and iron-deficient anemia before and after bariatric surgery.