Abstract Anæmia is a well recognised complication of partial gastrectomy, the incidence increasing with the postoperative interval. Many surveys show a similar incidence of untreated anæmia, which implies that the need for regular follow-up is recognised but not put into practice. Much information is available on the ætiology of postgastrectomy anæmia, and a single course of therapy is known to be effective. Since the difficulty seems to lie in early detection, prophylaxis may be a solution. Our study of a group of patients treated by gastrectomy attending a follow-up clinic during the past ten years has provided information on the frequency of anæmia and the outcome of different treatments.