Cancer patients attending The Norwegian Radium Hospital (NRH) rated themselves on the Hospital Anxiety and Depression Scale (HADS). Five hundred thirty-two patients also had valid measurements of haemoglobin at the same time. The associations between tertile haemoglobin levels (7.0-12.3 g/dl, 12.4-13.8 g/dl, 13.9-17.1 g/dl) and HADS-defined anxiety disorder and depression were analysed by logistic regression.