Letters

Lower haemoglobin may be the result rather than the cause of larger fetuses

BMJ 1995; 310 doi: https://doi.org/10.1136/bmj.310.6994.1601b (Published 17 June 1995) Cite this as: BMJ 1995;310:1601
  1. David Howe
  1. Senior registrar in fetal medicine Birmingham Maternity Hospital, Birmingham B15 2TG

    EDITOR,—Philip Steer and colleagues studied the relation between maternal haemoglobin concentration in pregnancy and birth weight and suggested that their results show that low haemoglobin concentrations are advantageous in improving fetal growth.1 They even suggested a theoretical risk that treatment to improve haemoglobin concentrations may be detrimental to the fetus. They do not discuss the alternative explanation that lower haemoglobin concentrations are the result …

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